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Brush Research 3 1/2' (89mm) Flex-Hone Cylinder Hone Tool 320 Grit (Silicon Carbide)

Free shipping on orders over $29.99

$74.69

$ 30 .99 $30.99

In Stock
  • 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)


Working range 3.050"-3.550" (75mm-90mm). Hone is 14" long. Great for steel cylinders.


Steven Banks
Reviewed in the United States on March 28, 2024
Well constructed a must when cleaning cylinders during a motor rebuild.
Jack Bakmezian
Reviewed in the United States on August 6, 2020
Its worked great the second time around. The product calls for the same diameter of the bore.. Well, my bore is exactly 3-1/2 inches so naturally I ordered the 3-1/2" brush. I read all reviews and called to confirm the brush was calibribated the extra length needed to hone the cylinders. The brush wasn't, it was the exact fit. I sent it back and order the 3-5/8 inch from the source. Ladies and gentleman I totally agree this is a great honing tool. Be sure and order the next size up. Also be prepared to go out and grab lengths of tubing. This brush cannot start rotating in the cylinder. Attached tubing on both side to whatever your honing. The balls shoot everywhere if you don't. Lesson learned.
Leslie J. Miller
Reviewed in the United States on January 30, 2014
this hone was very easy to use and worked almost effortlessly ! save a lot of $$$ and do it yerself !