I can't imagine what hard material this wire brush couldn't remove. You'll need a fairly powerful 7" or 9" grinder to use it as it's a monstrous tool for breaking knotted wire. It has a 5/8 11 thread and is suitable for all grinders and polishers. I have been working in the metalworking and manufacturing industry for many years and have never experienced a wire brush as hard as this one. Better hold on tight when you pull the bad boy trigger If you found this review helpful, please check the appropriate box, thanks.