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🔍 Unleash Precision with Every Stroke!
The Brush Research GB31424 FLEX-HONE® is a high-quality honing tool designed for precision finishing on mild steel, stainless steel, cast iron, and softer ferrous materials. With a diameter of 3-1/4" and 240 grit silicon carbide, it offers exceptional performance for various applications, including hydraulic and pneumatic cylinder rebuilding. Proudly made in the USA, this tool features a self-centering design and is compatible with a range of rotating spindles, making it a versatile addition to any workshop.

















| ASIN | B002XUL1F8 |
| Best Sellers Rank | #6,404 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Flex Hones |
| Brand | Flex-Hone |
| Brand Name | Flex-Hone |
| Bristle Type | Abrasive Globule Bonded To Flexible Nylon Filament |
| Color | Gray |
| Compatible Material | Other Softer Ferrous Materials, Stainless Steel, Mild Steel, Cast Iron |
| Customer Reviews | 4.8 out of 5 stars 1,833 Reviews |
| Grit Material | Silicon Carbide |
| Grit Material Type | Silicon Carbide |
| Grit Type | 240 Grit |
| Included Components | GB 3-1/4" (83MM) 240SC FLEX-HONE |
| Item Diameter | 3.25 Inches |
| Item Dimensions | 13.5 x 5.1 x 5.1 inches |
| Item Dimensions L x W | 13.5"L x 3.25"W |
| Item Type Name | Brush Research GB31424 FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials |
| Item Weight | 0.65 Pounds |
| Manufacturer | Brush Research Manufacturing |
| Material | Silicon Carbide |
| Material Type | Silicon Carbide |
| Model | GB31424 |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Part Number | GB31424 |
| Product Dimensions | 13.5"L x 3.25"W |
| Recommended Uses For Product | Deburring, Finishing |
| UPC | 600717230037 843469143396 |
| Unit Count | 1.0 Count |
| Warranty Description | Manufacturer Warranty |
L**R
Five stars!
The FLEX-HONE® is an outstanding tool for deburring and surface finishing! The 240-grit silicon carbide abrasive works perfectly on mild steel, stainless steel, and cast iron. It delivers a smooth, uniform finish with minimal effort. Durable and easy to use—highly recommended for automotive and machining applications. Great value for the quality.
T**O
Five stars
The FLEX-HONE® is a game-changer for surface finishing! The 240-grit silicon carbide abrasive works flawlessly on mild steel, stainless steel, and cast iron. It delivers a smooth, uniform finish while removing burrs effortlessly. Durable and easy to use—highly recommended for professionals and DIYers. Consistent performance and great value. Five stars
D**N
Perfect Tool for Smoothing Surfaces
Get ready for a game-changer, folks! 🛠️ This brush is like magic for getting that smooth finish on steel and iron surfaces. It's seriously the best thing since sliced bread! I absolutely love how it effortlessly works on mild steel, stainless steel, and cast iron. Trust me, this tool is a must-have in your workshop. Can't recommend it enough! 🔥👌
I**H
the better ones I have used it did take time though and he got to watch what you use oil basis
This is one of the best ones I've ever used cleaned up the Sounders awesome but took time!
J**L
Good product
I’m please with the cylinder wall finish
O**A
Helpful tool for engine work
I found this hone to be quite useful after not rebuilding an engine for a while. Its larger surface area makes it easier to keep the surface even. The pressure stays steady across the stone, which contributes to a smooth finish. I recently used it on a small Chevrolet engine, and it definitely simplified the job.
A**R
worked well
I used this on a Seadoo jet ski, and it exceeded my expectations
W**E
Does the job
Great product 10 out of 10 recommend
K**T
Flex-Home Cylinder
Met expectations..Very well built product..
M**E
Muy buen artículo
Excelente producto
J**M
Good tool
Worked well
R**L
Expensive for a hone but worth it so buy different sizes !
AS A HONE BEAUTIFUL!
I**D
Works well
Worked well for cleaning up 460 ford engine
Trustpilot
1 day ago
1 week ago