Brush Research GBD40024 FLEX-HONE, 4 (101mm) Diameter, 240 Grit, Silicon Carbide Abrasive (Pack of 1)
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mbc
> 3 daywhat a product, real good finishing hone.
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tkirk
> 3 dayI used these per ring manufacturer recommendation for grit. Worked perfect. Easy to use.
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jeff beary
> 3 dayBought this to rehone the 3.8 Buick cylinders after trying to use them old stone three arm hone devices. I have no idea why I ever thought that contraption would ever work. This thing is a beast. Takes seconds to use properly and I didnt have second thoughts about putting the crank back in and hooking up the Pistons. If you ever plan during your mid-life crisis that you must rebuild an engine, save yourself some time and get this and the next grit under and use these to perfectly hone your sbc or whatever man.
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Jake Zeller
> 3 dayUsed it on my 4.9 ford engine. It did a fantastic job.
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Marty
> 3 dayWorks like a dream!
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Jim McGreevy
> 3 dayGood tool for my VW 1600 rebuild! Took practice on an old detonated cylinder to get cross hatch just right. Practice first and use oil! Itll do the job quick and well.
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RandyO
> 3 dayIs and has always been a good product..
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Barry Woolf
12-06-2025great hone I,ll use it for years !
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bud
> 3 dayliked the hone, but yikes!, the price!
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Connor
> 3 dayUsed the 89mm size hone for my 84mm cylinders in my 52 motor and seemed to work good. Just lubed it up with some motor oil and followed instruction and the cross hatching seemed to come out really good, gotta speed it up on the last few strokes or else your cross hatches will not be close to 45 degrees which I found out quick enough.
