Brush Research FLEX-HONE Cylinder Hone, GB Series, Silicon Carbide Abrasive, 4-1/8 (105 mm) Diameter, 240 Grit Size

Best hone by far

worked perfect to deglazed cylinder wall on 2003 Ford Focus 2.0L SPI , also known as the dropped valve seat engine SOHC. Adds a nice crosshatch to cylinder. Directions for use were on end of brush box.

Ordered a few different grits to take out some gunk and pits from an engine i am working on. You can definitely see the improvements and new life these products can provide under the right circumstances. Sadly for my case the damage to my engine is more than i feel comfortable dealing with, with a hone at least. Will be buying these products in the future for sure!!

Just used it on one aircraft cylinder, but it did an amazing job. Other mechanics in the shop were equally amazed. The cylinder broke in very well.

deglazed my cylinders, and got it to work with my engine still in the car. only had to shorten it up

Nice tool 4 1/8 fits 06 5.7 hemi cylinder good fit used with regular engine oil for lubricant.

Bought 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 a second thought 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.

Very pleased with the performance of this item. Its good for 4-5 engines if you dont let it bottom out and crack the stones. But it does a very good job.

Great tool, used this on a 305 chevy and made a excellent hone on each cylinder, even and consistent on each cylinder.

Did a quick hone of the cylinder walls while refreshing the engine over the winter, Bore size on my motor was 4.030