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

Used it on my 4.9 ford engine. It did a fantastic job.

I used this to Bust the glaze on a 68mm bore, in a cast steel barrel of a motorcycle engine. It worked really well - 10 - 30 SAE Oil, 1,500 RPM for a few minutes, left a very smooth set of honing lines. BUT 1: you have to REALLY take time getting th e abrasive out of the barrel after the hone. and 2) I think you may need to run the devices for longer than I did, as the scoring marks were still evident after running in the Bke.

Excellent product will recommend to everybody

awesome---cleaned up a 7 inch bore cylinder 10 feet long and shows little wear---highly recommend

Good tool

This hone did a nice job on a pair of Harley Twincam cylinders. New rings seated in nicely and had a good seal.

It works perfectly

Exactly what I needed.

Worked great for honing a Ford 289 .030 over. If using an electric drill, swap batteries after the first bank.

These things are awesome. makes short and nice work honing cylinders.