Brush Research GBD40024 FLEX-HONE, 4 (101mm) Diameter, 240 Grit, Silicon Carbide Abrasive (Pack of 1)

I used these per ring manufacturer recommendation for grit. Worked perfect. Easy to use.

Great price and worked better than stone style honing tool.

Worked great on refreshing crosshatch pattern on a 5.3 GM with 225k miles. Very effective with light effort.

Worked as expected

It has a large surface area for big or small jobs. Great looking quality. Balls did not easily chip in shipping as some hones do.

Does a beautiful job as advertised. No complaints on performance or price.

Is and has always been a good product..

I still use this to restore my Onan p218 and p220 engines.

These ball hones are just right for a quick pass or two without removing too much material. Take care using them and it will last longer. Dont run them past the bottom of the bore or allow them to pop out the top during use. Check your speed and a nice cross hatch pattern is easy to achieve. I used the companion honing oil, pricey but easy clean up make it worth the money.

Used 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.