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

worked real good.Used it on a ford flathead motor

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

Works like a dream!

Worked really good on 6.0 lq4 engine rebuilt, easy to use with plenty of lubricant.

Technique for a ball hone is easily found online but it would have been reassuring to have the instructions directly from manufacturer. It worked as I expected and should last a long time.

Hubby says this is a great tool in his engine rebuild.

This honing brush is easy to use, is high quality and worked just as described. You do need to ensure you move at a quick and consistent pace to get a good cross hatch. I recommend this tool for anyone looking to refresh and engine.

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

Using the correct size on the cylinder size has provided a good result. Forced an oversized one once and did not yield an easy result.

Great for refreshing any EJ25, they have a 99.5MM or 3.91 inch bore for the 4 inch hone works great for them. I have done 2 of them now, put the drill on low speed and squirt oil on them as you go will give good results.