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Your cart is empty.The FLEX-HONE® tool was originally created by Brush Research Manufacturing to deglaze cylinder walls in automotive applications. Brush Research embraced the benefits of a plateau finish and pioneered the concept of plateau honing culminating in the introduction of the FLEX-HONE tool in 1972. The FLEX-HONE has gained many nicknames over the years and including ball hone, ball style hone, flexihone, dingleberry hone, bead brush, glaze breaker and glaze buster. Flexible honing with the FLEX-HONE tool produces an oil holding cross hatch pattern and a true plateau finish free of cut, torn and folded metal. Any type or size of cylinder can benefit from the FLEX-HONE®. These abrasive bead style brushes are produced in standard diameters from 4mm to 36 inches. Nine abrasive types are offered including silicon carbide, aluminum oxide, boron carbide and diamond allowing the tool to be tailored to finish any base material. A choice of 11 different grit selections are available for precise control of finish parameters. The elimination of peaks results in rapid ring seating, better oil control, reduced seepage in hydraulic and pneumatic applications and provides better seal performance and longer seal life. Successful applications include firearm chambers, shotgun barrels, musical instruments, combustion chambers, air compressors, pumps, valve bodies, valve guides, brake cylinders, wheel cylinders and the list goes on and on. FLEX-HONE® tools are also very effective for deburring cross drilled holes, port radiusing and edge blending. Because of its unique construction, the FLEX-HONE is self-centering, self-aligning, and self-compensating for wear so it does not require an elaborate set-up or special training. Deburring can be effectively automated and combined in the machining process to allow a complete cylinder finish in one operation or it can be employed as a secondary operation with equal results.
David Anderson
Reviewed in the United States on March 4, 2025
As described
Gino Catanzarite
Reviewed in the United States on March 1, 2025
I used a used a harbor freight 3 stone hone and ran that dry to remove as much material as I could and remove the deep score marks and ridge. I then ordered this BRM 105mm 240 grit hone and ran it with penetrating oil to get my final finish. I am more than pleased by the result! I would highly recommend to any DIY engine builder! This is by far the best finish I have ever seen from a power drill hone job!!!
Karl Menear
Reviewed in the United States on February 6, 2025
Despite being skeptical of ball hones working I was pleasantly surprised that this hone made a nice crosshatch pattern in the cylinders in a 2.2l ecotech engine.
Tyler
Reviewed in the United States on February 13, 2025
I used it on a rebuild of a FE350 Kawasaki engine. That is in my 1995 club car carry all six. I also bought the hone oil that they recommend. Worked great no complaints.
Piper
Reviewed in the United States on January 17, 2025
Works well. Good value.
Martin
Reviewed in Canada on September 10, 2024
Very easy to use. Lubricate well and use correct rpm. Online tip of moving very quickly to get good crosshatching works. Don't forget, only for use if cylinders not out of round. Very impressed with this hone.
Vernon
Reviewed in Canada on March 13, 2024
I actually have not used this flexhone tool yet. I was in contact with the Brush Research company and they assured me that the 3 1/2 inch will be the correct size for crosshatching the cylinders of a 4.6 litre ford modular engine. Time will tell !
john knight
Reviewed in the United States on November 8, 2024
The 240 grit silicon carbide bristles work really well on stainless steel and mild steel, giving it a smooth finish. It’s easy to use and cleans up my parts without damage.
Randall A.Rangel
Reviewed in the United States on November 5, 2024
It provided a smooth finish on the steel and stainless steel surfaces without any issues. The 240 grit was perfect for the job.
Cesar G
Reviewed in the United States on November 25, 2024
Makes fast work when paired with the honing cutting oil, instructions are clear, makes for fast work on each cylinder to deglaze them.
mestre
Reviewed in Mexico on October 7, 2024
Excelente producto
J. Rich
Reviewed in Canada on August 30, 2019
Quick ship and decent quality.
Customer
Reviewed in the United Kingdom on November 19, 2019
Did a great job, really easy to use
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