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The 8 Best flex hones of 2024

Are you trying to find flex hones among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling flex hones on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 27 hours of research and did 16 flex hones tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best flex hones you can buy today

No. 1
Brush Research GB41824 FLEX-HONE®, 4-1/8" (105mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials
  • [QUALITY]-Proudly Made in the USA. Quality and consistency you can count on made from the inventors and makers of the tool.
  • [DESIGN]-The FLEX-HONE is intentionally manufactured oversized. This engineered oversize creates the optimal amount of pressure inside the cylinder wall allowing the tool to be self-centering, self-aligning and self-compensating for wear and easy use.
  • [FINISHING BENEFITS]-Offered in a wide variety of grits to achieve specific finishing tolerances as well as a beautiful crosshatch finish. Ideal for rebuilding hydraulic and pneumatic cylinders, engine and brake cylinders, valve guides, pumps, compressors and more.
  • [CROSSHOLE DEBURRING]-Accomplish finishing and deburring simultaneously in a single setup. Can be used in virtually any rotating spindle from a hand drill, drill press or CNC equipment.
  • [240 GRIT SILICON CARBIDE ABRASIVE]-Excellent on mild steel, stainless steel, cast iron and other softer ferrous materials. Typically achieves a finish of 24 - 32 Microinch (.6 - .8 Micrometer).
  • [WHAT'S INCLUDED]-1 Each of a GB Standard Duty FLEX-HONE: 4.125"(105mm) Bore Diameter, 4" Abrasive Part Length, 0.310" Shank Diameter, 13.5" Overall Length. For Use on Bore Diameters Between 3.751"-4.125". PLEASE NOTE: ORDER BY BORE SIZE.
No. 2
Brush Research BC21224 FLEX-HONE®, 2-1/2" (63.5mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials
  • [QUALITY]-Proudly Made in the USA. Quality and consistency you can count on made from the inventors and makers of the tool.
  • [DESIGN]-The FLEX-HONE is intentionally manufactured oversized. This engineered oversize creates the optimal amount of pressure inside the cylinder wall allowing the tool to be self-centering, self-aligning and self-compensating for wear and easy use.
  • [FINISHING BENEFITS]-Offered in a wide variety of grits to achieve specific finishing tolerances as well as a beautiful crosshatch finish. Ideal for rebuilding hydraulic and pneumatic cylinders, engine and brake cylinders, valve guides, pumps, compressors and more.
  • [CROSSHOLE DEBURRING]-Accomplish finishing and deburring simultaneously in a single setup. Can be used in virtually any rotating spindle from a hand drill, drill press or CNC equipment.
  • [240 GRIT SILICON CARBIDE ABRASIVE]-Excellent on mild steel, stainless steel, cast iron and other softer ferrous materials. Typically achieves a finish of 24 - 32 Microinch (.6 - .8 Micrometer).
  • [WHAT'S INCLUDED]-1 Each of a BC Standard Duty FLEX-HONE: 2.500"(63.5mm) Bore Diameter, 3" Abrasive Part Length, 0.245" Shank Diameter, 8" Overall Length. For Use on Bore Diameters Between 2.376"-2.500". PLEASE NOTE: ORDER BY BORE SIZE.
SaleNo. 3
Brush Research GBD40024 FLEX-HONE®, 4" (101mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel Cast Iron and Softer Ferrous Materials
  • [QUALITY]-Proudly Made in the USA. Quality and consistency you can count on made from the inventors and makers of the tool.
  • [DESIGN]-The FLEX-HONE is intentionally manufactured oversized. This engineered oversize creates the optimal amount of pressure inside the cylinder wall allowing the tool to be self-centering, self-aligning and self-compensating for wear and easy use.
  • [FINISHING BENEFITS]-Offered in a wide variety of grits to achieve specific finishing tolerances as well as a beautiful crosshatch finish. Ideal for rebuilding hydraulic and pneumatic cylinders, engine and brake cylinders, valve guides, pumps, compressors and more.
  • [CROSSHOLE DEBURRING]-Accomplish finishing and deburring simultaneously in a single setup. Can be used in virtually any rotating spindle from a hand drill, drill press or CNC equipment.
  • [240 GRIT SILICON CARBIDE ABRASIVE]-Excellent on mild steel, stainless steel, cast iron and other softer ferrous materials. Typically achieves a finish of 24 - 32 Microinch (.6 - .8 Micrometer).
  • [WHAT'S INCLUDED]-1 Each of a GBD Heavy Duty FLEX-HONE: 4.000"(102mm) Bore Diameter, 6" Abrasive Part Length, 0.310" Shank Diameter, 13.5" Overall Length. For Use on Bore Diameters Between 3.751"-4.000". PLEASE NOTE: ORDER BY BORE SIZE.
No. 4
Brush Research 14353 Automotive FLEX-HONE® Kit, Diameters Included: 10mm, 1/2", 5/8”, 3/4”, 7/8”, 1”, 1-1/4”, 1-1/2” 1-3/4” and 2”, 180 Grit, Silicon Carbide Abrasive (Pack of 10)
  • [QUALITY]- Proudly Made in the USA. The FLEX-HONE is long lasting, lowering total cost of use compared to other brush options.
  • [INCLUDES]- Kit contains 10 popular automotive FLEX-HONE sizes: 10mm, 1/2", 5/8”, 3/4”, 7/8”, 1”, 1-1/4”, 1-1/2” 1-3/4” and 2”.
  • [IDEAL FOR]- Silicon carbide abrasive is ideal for mild steel, stainless steel and cast iron materials.
  • [DESIGN]- The FLEX-HONE is manufactured to be self-centering, self-aligning and self-compensating for wear for easy use. Can be used in virtually any rotating spindle.
SaleNo. 5
Brush Research GB314240AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Aluminum Oxide, For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials
  • [QUALITY]-Proudly Made in the USA. Quality and consistency you can count on made from the inventors and makers of the tool.
  • [DESIGN]-The FLEX-HONE is intentionally manufactured oversized. This engineered oversize creates the optimal amount of pressure inside the cylinder wall allowing the tool to be self-centering, self-aligning and self-compensating for wear and easy use.
  • [FINISHING BENEFITS]-Offered in a wide variety of grits to achieve specific finishing tolerances as well as a beautiful crosshatch finish. Ideal for rebuilding hydraulic and pneumatic cylinders, engine and brake cylinders, valve guides, pumps, compressors and more.
  • [CROSSHOLE DEBURRING]-Accomplish finishing and deburring simultaneously in a single setup. Can be used in virtually any rotating spindle from a hand drill, drill press or CNC equipment.
  • [240 GRIT ALUMINUM OXIDE ABRASIVE]-Excellent on Aluminum, Brass, Bronze, and softer non-ferrous materials. 240 AO is commonly used for deglazing Nikasil cylinders. Typically achieves a finish of 24 - 32 Microinch (.6 - .8 Micrometer).
  • [WHAT'S INCLUDED]-1 Each of a GB Standard Duty FLEX-HONE: 3.250"(83mm) Bore Diameter, 3.50" Abrasive Part Length, 0.310" Shank Diameter, 13.5" Overall Length. For Use on Bore Diameters Between 3.001"-3.250". PLEASE NOTE: ORDER BY BORE SIZE.
No. 6
Brush Research BC34240AO FLEX-HONE, 3/4"(19mm) Diameter, 240 Grit, Aluminum Oxide, For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials
  • [QUALITY]-Proudly Made in the USA. Quality and consistency you can count on made from the inventors and makers of the tool.
  • [DESIGN]-The FLEX-HONE is intentionally manufactured oversized. This engineered oversize creates the optimal amount of pressure inside the cylinder wall allowing the tool to be self-centering, self-aligning and self-compensating for wear and easy use.
  • [FINISHING BENEFITS]-Offered in a wide variety of grits to achieve specific finishing tolerances as well as a beautiful crosshatch finish. Ideal for rebuilding hydraulic and pneumatic cylinders, engine and brake cylinders, valve guides, pumps, compressors and more.
  • [CROSSHOLE DEBURRING]-Accomplish finishing and deburring simultaneously in a single setup. Can be used in virtually any rotating spindle from a hand drill, drill press or CNC equipment.
  • [240 GRIT ALUMINUM OXIDE ABRASIVE]-Excellent on Aluminum, Brass, Bronze, and softer non-ferrous materials. 240 AO is commonly used for deglazing Nikasil cylinders. Typically achieves a finish of 24 - 32 Microinch (.6 - .8 Micrometer).
  • [WHAT'S INCLUDED]-1 Each of a BC Standard Duty FLEX-HONE: 0.750"(19.1mm) Bore Diameter, 2.50" Abrasive Part Length, 0.190" Shank Diameter, 8" Overall Length. For Use on Bore Diameters Between 0.710"-0.750". PLEASE NOTE: ORDER BY BORE SIZE.
No. 7
Brush Research 09247 Rifle Chamber Flex-Hone, Silicon Carbide, 800 Grit, For 5.56 NATO (Pack of 1)
  • [QUALITY]- Proudly Made in the USA. The FLEX-HONE improves firearm performance.
  • [IMPROVES THE FINISH]- Removes nicks and scratches and allows the rounds to “fall” from the cylinder with ease, and eject smoothly from your chamber.
  • [REMOVES BRASS SCARRING]- Reloads will enter quickly and smoothly.
  • [CLEANING BENEFITS]- Efficiently removes oxidation and corrosion from your rifle chamber.
  • [STYLE]- For 5.56 NATO in 800 Grit Silicon Carbide
No. 8
Brush Research Flex-Hone For Rotors, Coarse Grit (Pack of 1)
  • [MADE IN USA]- The FLEX-HONE is a BRM invention and is still Proudly Made in the USA.
  • [ELIMINATE BRAKE NOISE]- Easily produce the ideal non-directional crosshatch finish in seconds to lower harmonic vibration.
  • [APPLICATIONS]- Ideal for new and re-turned rotors, flywheels and clutch plates.
  • [COARSE GRIT]- Choose Coarse Grit FLEX-HONE for Rotors (60 grit) to blend poorly turned rotors, remove heavy corrosion or for use on flywheels.
No. 9
Brush Research FHQ FLEX-HONE® Oil, Specially Formulated Honing Oil, 1 Quart Bottle (32 fl oz)
  • [INSTRUCTIONS FOR USE] Specially formulated for use with the FLEX-HONE in honing all types of metals.
  • [CONTAINS] A blend of honing and lapping oils, a lard oil to stop galling of aluminum and aide in lubricating of the surface.
  • [QUALITY] Proudly blended and bottled in the USA by Brush Research Manufacturing, inventors and makers of the FLEX-HONE.
No. 10
Flex-Hone - BC13418 Brush Research Cylinder Hone, BC Series, Silicon Carbide Abrasive, 1-3/4" (45 mm) Diameter, 180 Grit Size
  • Flexible abrasive cylinder hone for surface finishing and cross hole deburring
  • Self-centering, self-aligning, self-compensating for wear
  • Use by hand or in CNC equipment
  • Order by actual bore size, tool produced oversized
  • Sizes from 4mm to 36 inches
No. 12
Pro-Graad TwistFlex Cylinder Hone | 3” 240SC Flexible Cylinder Honing & Deburring Tool | 3” (76.2mm) Bore Brush for Hole Diameters 2.8"- 3.02" | Silicon Carbide 240 Grit | 13.5" Length | 1 Pack
  • What's Included: 1 each Pro-Graad TwistFlex Size: 3" (76mm) Hole Diameter, Working Length of Brush: 3.15" (80mm), Shank Diameter: 0.315" (8mm), Overall Length: 13-1/2" (343mm). FOR USE ON BORE DIAMETERS 2.80" - 3.02".
  • The Pro-Graad TwistFlex 3inch Cylinder Honing & Deburring Tool is manufactured oversized - ORDER BY THE BORE SIZE. Brush will be approximately ten percent oversized, but will easily conform and fit into the bore size diameter due to the flexibility of the honing tool stems.
  • Pro-Graad TwistFlex Cylinder Honing & Deburring Tool brushes have round abrasive spheres fastened to ends of flexible stems, which produces pressure and finishing evenly and consistently. For Engine Cylinders, Brake Cylinders, Hydraulics and Valve Guides.
  • The Pro-Graad TwistFlex Cylinder Honing & Deburring Tool can be run with hand tools, drill press, or CNC equipment. Apply a lubricant liberally such as a honing tool lubricant or 10-30 weight motor oil prior to using honing tool brush. Max RPM is 1200, however optimum range is 600 - 800 RPM. Tip: If producing cross-hatching pattern, less is best - maximum of two passes should be done with brush within 20-45 seconds of total run time, averaging between 10-55 strokes..
  • The 3 inch TwistFlex Cylinder Honing & Deburring Tool is self-centering, self-aligning and will conform to the bore diameter to provide consistent surface finishing, as well as deburring any cross-drilled holes. The brush is self-compensating to produce a consistent finish throughout the life of the tool.
  • All Pro-Graad products are made with quality materials, which exceed industrial grade standards. We are driven to deliver high-quality, high-performing products to the end user. This is why we stand behind our 100% Product Guarantee. If you are not satisfied with the product, simply return your purchase within 30 days, and we will replace or refund your order. Pro-Graad is an American Company with US Based Customer Support.
SaleNo. 14
Flex-Hone Tool BC23418 Brush Research Cylinder Hone, BC Series, Silicon Carbide Abrasive, 2-3/4"" (70 mm) Diameter, 180 Grit Size"
  • The Flex-Hone Tool is a resilient, flexible honing tool w/ globules of raw grain abrasive in a resin bond.
  • A perfect solution for many of your finishing, deburring and edge-bending needs. Designed for surface finishing and cross hole deburring in brake cylinders, wheel cylinders, hydraulics, pneumatics and valve guides.
  • Works in a wide variety of applications in the automotive and industrial fields.
  • Uses a flexible honing process to provide superior surface finish on any base material. Are unlike any other honing tool because it produces an unmatched controlled surface condition.
  • Available in a variety of sizes and abrasive types.
No. 15
Brush Research 00054 Chamber Flex-Hone, Aluminum Oxide, 12 Gauge, 800 Grit (Pack of 1)
  • [QUALITY]- Proudly Made in the USA. The FLEX-HONE improves firearm performance. Designed specifically for Shotgun Chambers.
  • [IMPROVES THE FINISH]- The FLEX-HONE will produce a smooth and consistent finish improving emptying and reloading
  • [QUICK AND EASY]- Efficiently removes oxidation and corrosion resulting in a more polished smoothbore with a beautiful finish
  • [IMPROVE ACCURACY]- The superior surface finish results in greater accuracy, reduced wear and longer life for your shotgun.
SaleNo. 16
Brush Research FLEX-HONE Cylinder Hone, BC Series, Silicon Carbide Abrasive, 5/8" (16 mm) Diameter, 180 Grit Size
  • Flexible abrasive cylinder hone for surface finishing and cross hole deburring
  • Self-centering, self-aligning, self-compensating for wear
  • Use by hand or in CNC equipment
  • Order by actual bore size, tool produced oversized
  • Sizes from 4mm to 36 inches
No. 17
Flex Hone 4" to 4.25" Heavy Duty Ball Hone SBC SBF New
  • 240 Grit
  • Fits common V-8 Ford Chev Chrys 4" - 4.250" bore applications
SaleNo. 18
Brush Research - BC12800CD BC Flex Hone, Diamond, 1/2" Diameter, 800 Grit (Pack of 1)
  • [QUALITY]-Proudly Made in the USA. Quality and consistency you can count on made from the inventors and makers of the tool.
  • [DESIGN]-The FLEX-HONE is intentionally manufactured oversized. This engineered oversize creates the optimal amount of pressure inside the cylinder wall allowing the tool to be self-centering, self-aligning and self-compensating for wear and easy use.
  • [FINISHING BENEFITS]-Offered in a wide variety of grits to achieve specific finishing tolerances as well as a beautiful crosshatch finish. Ideal for rebuilding hydraulic and pneumatic cylinders, engine and brake cylinders, valve guides, pumps, compressors and more.
  • [CROSSHOLE DEBURRING]-Accomplish finishing and deburring simultaneously in a single setup. Can be used in virtually any rotating spindle from a hand drill, drill press or CNC equipment.
  • [800 MESH GRIT DIAMOND ABRASIVE]-Excellent on carbide, ceramic and hardened tool steel. Typically achieves a finish of 10 - 20 Microinch (.3 - .6 Micrometer).
  • [WHAT'S INCLUDED]-1 Each of a BC Standard Duty FLEX-HONE: 0.500"(12.7mm) Bore Diameter, 2.50" Abrasive Part Length, 0.168" Shank Diameter, 8" Overall Length. For Use on Bore Diameters Between 0.473"-0.500". PLEASE NOTE: ORDER BY BORE SIZE.
No. 19
Brush Research 00048 Shotgun Barrel Flex-Hone, Silicon Carbide, 12 Gauge, 180 Grit (Pack of 1)
  • [QUALITY]- Proudly Made in the USA. The FLEX-HONE improves firearm performance. Designed specifically for Shotgun Barrels.
  • [IMPROVES THE FINISH]- The FLEX-HONE will produce a smooth and consistent finish that will prevents plastic from building up as quickly in the future.
  • [QUICK AND EASY]- Efficiently removes oxidation and corrosion resulting in a more polished smoothbore with a beautiful finish.
  • [IMPROVE ACCURACY]- The superior surface finish results in greater accuracy, reduced wear and longer life for your shotgun.
No. 20
Brush Research 3 1/4" (83mm) Flex-Hone Cylinder Hone Tool 240 Grit (Silicon Carbide)
  • Flexible Cylinder Hone made of Silicon Carbide
  • Hone is Made in USA by Brush Research Manufacturing
  • Hone is self centering and can be used with 3/8" or 1/2" chuck drill
  • Perfect for bore honing and cylinder refinishing
  • The hone size listed on the product is the bore it is intended to be used for (or slightly smaller bore will work)

How to choose a good flex hones

Does the idea of finding a fantastic flex hones make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in flex hones. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top flex hones products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top flex hones on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top flex hones brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top flex hones based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the flex hones were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good flex hones, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your flex hones.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting flex hones for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our flex hones. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what flex hones should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on flex hones.