Flex-Hone Brush Research Cylinder Hone, GB Series, Silicon Carbide Abrasive, 3-1/2" (89 mm) Diameter, 240 Grit Size

Quick ship and decent quality.

Buy exact fit to the .10" or one .10" largerWorking on a 22r Toyota stock bore 3.6".This hone did it's job with a nice cross hatch. However, the hone just barely hit the bore walls. Maybe this is by design but I feel I should have gotten the 3.75" bore hone as my bore size is 3.6"If your bore is 3.5" then you would be fine. The hone would have a bit of pressure on the bore walls. If you plan on honing a 22r look for the next size up.The balls on the hone wore down Farley fast making flat spots on most the balls. So when you use this you do not want to hone one bore at a time. Make like 2 passes per bore to break in the hone tell you have broke the glazing off the bore walls and broke in the hone, then work on your cross hatch pattern.Over all I like this hone and it's ease of use but the fact that I most likely will not be able to use it again, I may get one more use from it in 5-8 years witch would pay for it self then but a stone hone would be more cost effective.If you build the same 3.5" size bore engine all the time this hone would be ideal. Cause you can just grab put in drill and hone (adding cutting oil).

Works well as a hone. Keep in mind they don't have much range so you need the correct size, you can't squeeze this into a smaller cylinder. You're gonna want your drill on slow speed and pretty aggressively stroke it in and out to get a 45 degree crosshatch.

did what i wanted. i use constant water vice oil for honing since i want to get rid of the what im scraping off. this was a little big for my little guy (1989 CIVIC HATCH) but it worked perfectly. and it doesnt look like it is worn out so its not one time use. unless you are trying to take off alot of material.

This honing tool worked perfectly and now we’re ready to start the re-assembly of our engine.