I’ve tested and compared various beaker and flask sets for labs and students. The best ones are made from high-quality borosilicate glass or impact-resistant plastics, offering durability, precise measurements, and safety features like thick rims and stable bases. Sizes vary from small 25 mL to large 6000 mL options, ideal for different experiments. If you want reliable tools that deliver accurate results and last long, keep exploring these options—there’s plenty more to discover.
Key Takeaways
- High-quality borosilicate glass and impact-resistant plastics ensure durability, thermal stability, and precise measurement for various laboratory needs.
- Sets feature a wide range of sizes with clear, accurate graduation marks for reliable results in experiments and educational activities.
- Designed with safety in mind, including thick walls, reinforced rims, and stable bases to prevent breakage and spills.
- Suitable for professional, educational, and hobbyist use, supporting chemical reactions, measurements, and small-scale experiments.
- Custom packaging and included cleaning tools enhance longevity, reusability, and ease of handling for consistent, precise outcomes.
Cole-Parmer Laboratory Glass Erlenmeyer Flask, 6000 mL
Are you looking for a durable, high-capacity flask that can handle demanding lab conditions? The Cole-Parmer Laboratory Glass Erlenmeyer Flask, 6000 mL, is built from high-quality borosilicate 3.3 glass, making it both tough and thermally resistant. It withstands temperatures from -50°C to 550°C, perfect for heating, autoclaving, or cooling. Its thickened rims and sturdy design reduce breakage, so I can rely on it for repeated sterilizations and heavy use. With precise graduations and a stable, flat bottom, it’s ideal for accurate measurements and safe handling. This flask is a reliable, long-lasting tool for professional and hobbyist labs alike.
Best For: professional laboratories, hobbyists, and anyone needing a durable, high-capacity flask for demanding thermal and chemical applications.
Pros:
- Made from high-quality borosilicate 3.3 glass for durability and thermal resistance from -50°C to 550°C
- Thickened rims and sturdy design reduce breakage and ensure long-lasting performance through repeated sterilizations
- Precise graduations and stable flat bottom enable accurate measurements and safe handling
Cons:
- Some units may arrive damaged, cracked, or with manufacturing imperfections due to shipping or quality control issues
- Heavier weight due to thick glass and sturdy construction may be less convenient for extended handling or transport
- Occasional reports of flasks arriving dirty or with missing items in bulk orders
18 Pieces Lab Glassware Set Including Beakers, Flasks, Cylinders, Droppers, Brushes, and Stirring Rods
This 18-piece lab glassware set is perfect for students, hobbyists, and educators who need a complete, all-in-one solution for small-scale experiments. It includes graduated cylinders, beakers, and Erlenmeyer flasks in various sizes, along with glass droppers, stirring rods, and brushes for cleaning. Made from high-quality borosilicate glass, it’s durable and heat resistant, with clear measurement markings for accuracy. The wide rims and pouring spouts make handling easy, even for beginners. While some find the glass a bit thin, overall, it offers great value for educational use and small projects, encouraging hands-on learning and experimentation.
Best For: students, educators, and hobbyists seeking a complete and affordable set of durable lab glassware for small-scale experiments and educational activities.
Pros:
- Includes a comprehensive variety of glassware pieces for versatile use in experiments.
- Made from high-quality borosilicate glass, ensuring heat resistance and durability.
- Features clear measurement markings and user-friendly design elements like wide rims and pouring spouts.
Cons:
- Some users report the glassware being thin and prone to breakage with frequent or rough handling.
- A few pieces may arrive broken or damaged due to packaging or fragility.
- Not suitable for heavy-duty or industrial applications, limited by the thin glass construction.
18 Pieces Lab Glassware Set with Beakers, Flasks, Cylinders, Droppers, Brushes, and Stirring Rods
If you’re looking for a thorough lab glassware set suitable for students, hobbyists, or educators, the 18-piece Pieces Lab Glassware Set offers everything needed for a variety of experiments. It includes graduated cylinders, beakers, flasks, droppers, stirring rods, and brushes, making setup quick and efficient. Made from high-quality borosilicate glass, the set guarantees durability and heat resistance, with clear measurements for accurate results. Designed for ease of use, the wide rims and spouts simplify pouring and handling. While some users report fragility, it remains a popular choice for educational and small-scale projects, providing excellent value and versatility.
Best For: students, hobbyists, and educators seeking a comprehensive and versatile lab glassware set for educational experiments and small-scale projects.
Pros:
- Includes a wide variety of glassware pieces such as beakers, flasks, cylinders, droppers, stirring rods, and brushes for diverse experiments.
- Made from high-quality borosilicate glass that offers durability and heat resistance.
- Designed with user-friendly features like wide rims and pouring spouts for easy handling and measurement.
Cons:
- Some pieces may be fragile and prone to breakage, especially with frequent handling or mishandling.
- Users have reported receiving broken items upon arrival or after use.
- The glassware can be thin, which may compromise durability over time.
Glass Narrow Mouth Erlenmeyer Flask Set (FGSET3)
The Glass Narrow Mouth Erlenmeyer Flask Set (FGSET3) is an excellent choice for anyone needing reliable, durable laboratory flasks in multiple sizes. It includes 50 mL, 150 mL, and 250 mL options, perfect for various experiments. Crafted from high-quality borosilicate glass, these flasks resist thermal shock and are built to last. The narrow mouth design helps prevent spills and allows for precise pouring. Heavy-duty rims and clear graduations make measurements straightforward. Users praise their strength, reliability, and suitability for educational and professional labs, making this set a solid investment for accurate, consistent results.
Best For: students, educators, and professionals seeking durable, reliable laboratory flasks for precise scientific experiments.
Pros:
- Made from high-quality borosilicate glass for excellent thermal shock resistance and durability
- Narrow mouth design reduces spillage and allows for precise pouring
- Clear white enamel graduations enable easy measurement and visibility
Cons:
- Limited to three specific sizes, which may not cover all experimental needs
- Not suitable for highly aggressive chemicals that may require specialized materials
- Hand wash recommended to preserve graduation markings and glass integrity
QWORK Lab Glassware Set, Borosilicate Beaker Flask Cylinder Set
For educators, students, and home experimenters seeking reliable and versatile lab glassware, the QWORK Borosilicate Beaker Flask Cylinder Set offers a practical solution. Made from durable borosilicate glass, it withstands thermal shocks and is suitable for heating. The set includes beakers, Erlenmeyer flasks, graduated cylinders, droppers, stirring rods, and brushes, covering most lab needs. Each piece features rims, pouring spouts, and clear measurement markings for accuracy. While some users note thinner glass that heats well but may be less durable, the overall quality is good for the price. It’s ideal for educational and basic home lab use.
Best For: educators, students, and home experimenters seeking reliable, versatile, and affordable lab glassware for basic scientific activities.
Pros:
- Made from durable borosilicate glass resistant to thermal shock and suitable for heating.
- Includes a comprehensive set of lab items such as beakers, flasks, cylinders, droppers, and cleaning tools, covering most basic lab needs.
- Features rims, pouring spouts, and clear measurement markings for precise pouring and measurement.
Cons:
- Some users report the glass is thinner and less durable, which may increase breakage risk.
- Packaging, while thorough, has occasional reports of items arriving broken, indicating room for improvement.
- Droppers are ungraduated, limiting their precision for measurement compared to pipettes.
PATIKIL Erlenmeyer Flask, 12 Pcs 25ml Borosilicate Glass with Graduation
Designed for both students and professionals, the PATIKIL Erlenmeyer Flask set offers reliable, high-quality glassware perfect for precise liquid handling. Made from high borosilicate glass, these 25ml flasks withstand high temperatures, resist chemicals, and are built for durability. The narrow mouth design minimizes evaporation, while clear graduation marks ensure accurate measurements. The thick glass walls provide safety and longevity, making them ideal for experiments, education, and industrial research. With a stable base and easy handling, these flasks are versatile tools that deliver consistent results, whether you’re mixing chemicals or teaching fundamental lab techniques.
Best For: students, educators, and professionals seeking durable, precise glassware for laboratory experiments and scientific research.
Pros:
- Made from high borosilicate glass for heat resistance and chemical stability
- Clear graduation marks for accurate volume measurement
- Narrow mouth design reduces evaporation and enhances experimental accuracy
Cons:
- Handle with care to prevent breakage despite sturdy construction
- Some customers experienced delays due to back-ordering
- Smaller size (25ml) may require multiple flasks for larger volume experiments
Karter Scientific Griffin Low-Form Glass Beaker Set (6 Sizes: 10ml to 1000ml)
If you’re looking for a versatile beaker set that balances durability with accurate measurements, the Karter Scientific Griffin Low-Form Glass Beaker Set is an excellent choice. It includes six sizes from 10ml to 1000ml, made from heavy-duty borosilicate glass that resists heat, cold, and chemical corrosion. Each beaker features double-metric graduations with a 5% tolerance, flat bottoms for stability, and large openings for easy cleaning. Designed for both professionals and hobbyists, these beakers are sturdy, reusable, and capable of withstanding thermal shocks and drops. Customers praise their quality, durability, and versatility for laboratory, kitchen, or decorative uses.
Best For: hobbyists, students, and professionals seeking a durable, accurate, and versatile set of laboratory beakers for measurement, heating, and everyday use.
Pros:
- Made from heavy-duty borosilicate glass resistant to heat, cold, and chemicals, ensuring longevity and safety.
- Includes six sizes with precise double-metric graduations and a 5% tolerance for accurate measurements.
- Flat-bottom design provides stability, and large openings make cleaning easy, suitable for various applications.
Cons:
- Slightly heavier than some plastic alternatives, which may be cumbersome for extended handling.
- While durable, glass beakers can still break if dropped or mishandled roughly.
- The set may be more expensive than basic plastic or lower-quality glass beakers, though it offers better durability and accuracy.
EISCO Laboratory Glassware Set, 9pcs
Looking for a reliable, durable glassware set perfect for educational or hobbyist use? The EISCO Laboratory Glassware Set, 9pcs, offers excellent quality with high-grade Borosilicate 3.3 glass that resists thermal shocks and chemicals. It includes three beakers, three Erlenmeyer flasks, and three graduated cylinders, all with clear measurements and sturdy construction. The set’s thick walls and protective collars enhance durability, while the custom foam packaging ensures safe delivery. Ideal for experiments, measuring, or crafting, this set combines professional design with affordability. Many users praise its robustness and versatility, making it a great addition to any lab or workspace.
Best For: students, educators, hobbyists, and professionals seeking a durable, reliable glassware set for experiments, measuring, and crafting projects.
Pros:
- Made of high-quality Borosilicate 3.3 glass that resists thermal shocks and chemicals
- Thick walls and protective collars enhance durability and safety during use and transport
- Custom foam packaging ensures safe delivery with minimal risk of damage
Cons:
- May have a slight smell upon initial opening for some users
- Original packaging is robust but may require double packing for added privacy during shipping
- Not suitable for very high-temperature industrial processes outside typical laboratory or educational use
Plastic Erlenmeyer Flask 50ml 100ml Laboratory Chemical Erlenmeyer Students Kids Education Learning Tool
The Plastic Erlenmeyer Flasks in 50ml and 100ml sizes are perfect for students, kids, and educators seeking safe, durable labware for educational and creative projects. Made from sturdy PP, they resist chemicals, acids, and high temperatures up to 121℃, ensuring safety and reusability. Their stereo clear design with easy-to-read scale marks makes them ideal for experiments, decorations, or crafts. These break-proof flasks are perfect for classroom activities, science fairs, or DIY projects. Although not fully precise, they provide enough accuracy for basic tasks. I recommend them for their robustness, safety, and versatility in a variety of educational and artistic settings.
Best For: educators, students, parents, and hobbyists seeking durable, safe, and versatile labware for educational, creative, and artistic activities.
Pros:
- Made from sturdy, break-proof PP material suitable for children and outdoor use
- Resistant to chemicals, acids, and high temperatures up to 121℃, ensuring safety and durability
- Easy to read stereo clear scale marks, ideal for basic measurements and experiments
Cons:
- Slight mold variance may affect measurement precision
- Sizes are somewhat smaller than expected for some users’ needs
- Not fully precise in measurement, limiting use for highly accurate scientific applications
Glass Erlenmeyer Flask Set (250 ml, 150 ml & 50 ml) with Stoppers
For anyone seeking reliable, high-quality glassware for precise liquid measurements, the Glass Erlenmeyer Flask Set (250 ml, 150 ml, and 50 ml) with stoppers offers an excellent solution. Made from durable borosilicate glass, these flasks resist high temperatures and chemical corrosion, ensuring long-term use. Each flask has clear graduation marks for accurate measurement, and the included rubber stoppers provide secure sealing during experiments. The set is well-packaged and easy to clean, making it suitable for chemistry labs, educational settings, and liquid storage. While some users note the smallest flask could be larger, overall, it’s a sturdy, dependable choice.
Best For: students, educators, and professionals needing precise, durable glassware for chemical experiments and liquid measurements.
Pros:
- Made from high-quality borosilicate glass resistant to high temperatures and chemicals
- Accurate graduation scales for precise liquid measurement
- Comes with secure rubber stoppers for airtight sealing
Cons:
- Small size of the 50 ml flask may limit its usefulness for some users
- Some users report occasional leakage or difficulty sealing with the stoppers
- Packaging issues have led to damage during transit for the largest flask in some cases
Twdrer Plastic Beaker Set with 20 Droppers
If you’re seeking a versatile and reliable set of laboratory tools, the Twdrer Plastic Beaker Set with 20 Droppers is an excellent choice. It includes seven sturdy, reusable plastic beakers ranging from 30ml to 1000ml, all made from high-quality, eco-friendly food-grade plastic. The set also features 20 precision pipettes, perfect for transferring small volumes accurately. Designed for easy cleaning and transport, these beakers resist shattering, making them suitable for labs, kitchens, or educational settings. The clear, raised-scale markings help with accurate readings, and the variety of sizes meets multiple measurement needs effortlessly.
Best For: students, educators, home experimenters, and professionals needing versatile, durable, and precise liquid measurement tools.
Pros:
- Made from high-quality, eco-friendly food-grade plastic that is shatter-resistant and easy to clean
- Comes with 20 precision pipettes for accurate small-volume transfer
- Includes a variety of sizes from 30ml to 1000ml, suitable for multiple applications
Cons:
- Graduation markings may be difficult to read due to same color as the plastic, especially for the smaller sizes
- Larger beakers, like the 1-liter size, may not feel as sturdy or durable under heavy use
- Slight foggy transparency might reduce visibility of the liquid level in certain lighting conditions
Xuhal 5Pcs Graduated Cylinder and Beakers Set, Plastic Erlenmeyer Flasks, and Disposable Transfer Pipettes
Designed with safety and durability in mind, the Xuhal 5Pcs Graduated Cylinder and Beakers Set is ideal for educational settings, home experiments, and classroom activities. The set includes a variety of sizes—graduated cylinders, beakers, Erlenmeyer flasks, and disposable pipettes—that meet diverse experimental needs. Made from high-quality, safe plastic, these tools are unbreakable, lightweight, and resistant to acids, bases, solvents, and high temperatures. Their clear measurement markings and stable bases guarantee accurate readings and ease of use. Perfect for kids, students, and educators, this set offers a reliable, safe, and versatile solution for a wide range of science experiments.
Best For: educators, students, and DIY science enthusiasts seeking durable, safe, and versatile laboratory tools for educational and recreational experiments.
Pros:
- Made from high-quality, unbreakable plastic that resists acids, bases, solvents, and high temperatures.
- Features clear, easy-to-read graduated markings and stable bases for accurate measurements.
- Lightweight, safe for children, and suitable for repeated sterilization, making them ideal for classroom and home use.
Cons:
- Less detailed measurement markings compared to glass laboratory equipment, limiting precision for advanced research.
- Not suitable for high-temperature experiments involving boiling or very hot liquids.
- Limited to basic sizing options, which may not cover highly specialized or professional laboratory needs.
Teenitor Plastic Graduated Cylinder and Beaker Set
The Teenitor Plastic Graduated Cylinder and Beaker Set stands out as an excellent choice for educators, students, and hobbyists seeking durable, safe, and versatile laboratory tools. This set includes five graduated cylinders and five beakers in various sizes, from 10ml to 1000ml, suitable for multiple applications. Made from food-grade, acid, and alkali-resistant plastic, they’re lightweight, sturdy, and safe for household use. The double-sided raised scales resist fading, ensuring accurate measurements. Their hexagonal bases provide stability, and handles make pouring easier. While some markings are less visible, these tools are reliable for educational, craft, or non-critical lab tasks.
Best For: educators, students, and hobbyists seeking durable and versatile plastic lab tools for educational, craft, or household use.
Pros:
- Made from food-grade, acid, and alkali-resistant plastic ensuring safety and durability
- Features double-sided raised scales for accurate measurement and hexagonal bases for stability
- Lightweight, shatter-resistant, and easy to clean, suitable for children and household environments
Cons:
- Some measurement markings may be less visible or unmarked, affecting readability
- Larger beakers can be prone to breakage despite careful packaging
- Plastic temperature sensitivity may impact measurement accuracy compared to glass counterparts
10 Pack Plastic Erlenmeyer Flask for Laboratory and Educational Use
This 10-pack of plastic Erlenmeyer flasks is an excellent choice for educators, students, and laboratory professionals who need reliable, durable, and versatile lab tools. The set includes five different capacities—50ml, 100ml, 250ml, 500ml, and 1000ml—covering a range of common laboratory tasks. Made from thickened, impact-resistant PP plastic, these flasks withstand drops, pressure, and rough handling. Their transparent design with engraved markings allows for accurate measurement, while their resistance to heat, acids, and alkalis makes them suitable for hot liquids and corrosive chemicals. Overall, these flasks provide long-lasting performance in both educational and professional settings.
Best For: educators, students, and lab professionals seeking versatile, durable plastic Erlenmeyer flasks for a variety of laboratory and educational applications.
Pros:
- Made from thickened, impact-resistant PP plastic for long-term durability
- Comes with five different capacities to suit diverse laboratory needs
- Transparent design with engraved markings for accurate and clear measurement
Cons:
- Some users report the flasks appear cloudy, which may hinder visibility
- Plastic construction might not be suitable for high-precision volume measurements
- Not suitable for use with extremely high temperatures beyond typical laboratory conditions
Factors to Consider When Choosing Beaker and Flask Sets for Labs and Students
When selecting beaker and flask sets for labs and students, I focus on factors like material strength and safety to guarantee durability and user protection. I also consider measurement accuracy with clear markings, as well as size options that suit different experiments. Ultimately, choosing the right set depends on how well it matches the experiment requirements and long-term reusability.
Material Strength and Safety
Choosing beaker and flask sets that are strong and safe is essential for reliable laboratory work. I look for sets made from high-quality borosilicate glass or impact-resistant plastics that can withstand thermal shocks and rough handling. It’s important to verify that the materials meet safety standards like ASTM or ISO, ensuring they’re free from harmful chemicals. Reinforced walls, thick rims, and heavy-duty construction add durability and reduce breakage risk during use or accidental drops. Chemically resistant glass or plastic is crucial to prevent degradation when exposed to acids, alkalis, or solvents, maintaining sample integrity. Additionally, I prefer sets with clear, durable measurement markings, so readings stay accurate and safe to use over time. Material strength and safety are vital for both precise results and user confidence.
Measurement Accuracy and Markings
Accurate measurement markings are crucial for reliable lab work, so I prioritize sets with clear, durable graduations. Precise, minimal tolerances—around 0.05 mL or 5%—ensure measurements are trustworthy. Well-printed or engraved scales resist fading and wear, maintaining accuracy through repeated use and sterilization. The design and placement of markings matter too; dual-sided or high-contrast inks improve visibility in various lighting conditions, reducing reading errors. Consistent calibration and high manufacturing quality control are essential, as they guarantee that the markings accurately reflect true volumes. When choosing beakers and flasks, I look for sets that combine durability with precise, easy-to-read measurements, ensuring my results are both reliable and reproducible every time.
Size and Capacity Options
Selecting the right size and capacity for beaker and flask sets is essential for efficient lab work and effective teaching. Beakers and flasks come in a range of sizes, from small 50ml options to large 2000ml or more, to suit different tasks. When choosing, consider the experiment’s volume needs—smaller sizes are perfect for precise measurements, while larger ones are better for mixing or storage. For educational settings, sets with multiple sizes help students learn about volume measurement and handling different quantities. Larger flasks and beakers often have thicker walls for durability and heat resistance, which is important for repeated heating or autoclaving. Matching the size to the specific task ensures accuracy, safety, and efficiency during experiments.
Durability and Reusability
When evaluating beaker and flask sets for lab use, durability and reusability are crucial factors that impact long-term performance. High-quality borosilicate glass is essential, as it resists thermal shocks and chemical exposure, ensuring the sets last through frequent use. Sets with thick walls and sturdy rims resist cracking, chipping, and breakage during handling and sterilization. The ability to autoclave or withstand high temperatures without degradation indicates excellent reusability. Clear measurement markings that won’t fade or chip over time help maintain accuracy across multiple uses. Proper design features, like reinforced rims and thick glass walls, also extend the lifespan of these sets. Investing in durable, reusable options ensures safety, cost-effectiveness, and consistent results in both professional and educational lab environments.
Compatibility With Experiments
Choosing the right beaker and flask sets for your experiments depends heavily on guaranteeing compatibility with your specific procedures. First, check that the material, like borosilicate glass or durable plastic, can handle the temperature ranges involved. Make sure the sizes and volumes match your measurement needs precisely. Compatibility with chemical reactions is vital; select sets resistant to acids, alkalis, and solvents used in your work. Pay attention to design features—narrow mouths or wide rims—that support proper handling and pouring. Additionally, guarantee the measurement markings are clear and accurate enough for your required level of precision. By considering these factors, you’ll select sets that fit seamlessly into your experimental process, ensuring safety, accuracy, and efficiency.
Price and Value Considerations
Considering cost and value when selecting beaker and flask sets is essential, as it guarantees you get the best balance between quality and affordability. I recommend evaluating the durability and material quality to ensure long-term use, which saves money over time. Comparing the included items and their sizes helps determine if the set suits your specific needs, whether for teaching or experiments. Cheaper sets with thinner glass might seem attractive initially but could lead to frequent replacements, increasing costs. Look for sets that combine affordability with safety features like thick walls and stable bases, maximizing value. Investing in higher-quality, well-packaged sets might cost more upfront but often delivers better durability and overall savings, making them a smarter choice for both students and professionals.
Frequently Asked Questions
What Are the Most Durable Materials for Lab Beaker and Flask Sets?
You’re asking about the most durable materials for lab beakers and flasks. I’d recommend borosilicate glass because it’s resistant to thermal shock and chemicals, making it ideal for rigorous lab work. Alternatively, high-quality plastics like polypropylene can withstand impact and are lightweight, but they may not handle high temperatures as well. Overall, borosilicate glass strikes the perfect balance of durability and chemical resistance for precise results.
How Do I Clean and Maintain Glassware to Ensure Accuracy?
Thinking about accuracy, you’d think cleaning glassware was simple, right? Not quite! I always rinse thoroughly after each use, avoiding harsh abrasives that could scratch surfaces. I regularly check for residue and use proper drying techniques—air drying or gentle lint-free cloths. Proper maintenance keeps my glassware spotless, ensuring precise results. Trust me, a little effort now saves headaches later—accuracy depends on clean, well-cared-for tools.
Are There Beaker and Flask Sets With Measurement Certifications?
You’re wondering if beaker and flask sets come with measurement certifications. I’ve found that some high-quality sets are indeed certified, meaning they meet strict standards for accuracy and calibration. These certified sets are perfect for precise experiments and professional lab work. When shopping, look for sets labeled with calibration or certification details to guarantee you’re getting reliable, accurate measurements every time.
Which Sets Are Safest for Educational Use With Children?
Think of choosing beaker and flask sets for children as picking a sturdy bridge for little explorers. I recommend sets made from shatter-resistant, BPA-free plastic with rounded edges. These materials are safer and less likely to break. Look for sets with secure, leak-proof lids and clearly marked measurements. I always prioritize safety, ensuring young learners can experiment confidently without risks. Safety first makes every science adventure a success.
How Do I Select Beaker and Flask Sizes for Specific Experiments?
When selecting beaker and flask sizes for specific experiments, I consider the volume of liquids involved and the precision needed. I look at the experiment’s instructions to determine if I need larger sizes for mixing or smaller ones for measuring. I also think about room for expansion or safety margins. Choosing the right size guarantees accurate results and safe handling, making my experiments more efficient and reliable.
Conclusion
Choosing the right beaker and flask set isn’t just about accuracy—it’s about finding tools that inspire confidence in every measurement. I’ve learned that the best sets often come when you least expect it, like stumbling upon a reliable, affordable option after countless searches. Whether you’re a student or a professional, the right set can make all the difference, turning everyday experiments into precise, memorable discoveries. Sometimes, it’s the smallest tools that bring the biggest results.
