Scotch-Brite Clean and Strip XT Pro Disc - Rust and Paint Stripping Disc - 4.5” diam. x 5/8-11 Quick Change Thread - Extra Coarse Silicon Carbide - Pack of 1

Removes paint and mill scale without marring the underlying steel better than anything Ive ever used. Durable. Worth the price for a quality product.

While I would love it if they lasted longer, mill scale is an extremely stubborn material. These work well and probably replace at least 6 or more flapper discs that you would go through to accomplish the same job. Also, these dont damage the underlying metal. Will be keeping several in stock at all times.

Great stripping disc. Expensive but if you want to speed up your stripping project then this is the product you need.

Works great while they last, but they are very expensive given how long they last. Mostly I tested them byt removing paint and/or rust from a small amount of mild steel tubing, plate and bars.

I tried so many grinder wheels, wire brush wheels, cup brush wheels, etc. regular grinders would scratch the metal. Brush wheels take forever. Mill scale falls right off with this one.

I did some online research and noticed that a lot of people rated this 3M wheel very highly for removing mill scale from structural steel. They are right. Its like the magic eraser for welders. Much faster than wire brushes. Not as obnoxious as acid methods. Buy one. You wont regret it.

Used this to remover a pretty decent amount or surface rust from my hotrods cowl hood. Took about 30 min and I had removed all the rust from my hood straight down to bare metal without a single small spark flying. Great product and would highly recommend to anyone who is working with minor to mild rust.

Nunca pensé que este tipo de discos removiera tan fácil el óxido en metales me sorprendió al utilizarlo, estoy muy satisfecho y si problemas se le adapta a cualquier amoladora de 4 Pulgadas volveré a comprar otras 2 pza.

Works Great on Mill Scale, but doesnt last long. This wore out very quickly. That being said, it takes off heavy mill scale very quickly while leaving a smooth surface. Much smoother and quicker than using a 36 grit sanding disk. But it didnt last very long. I love using it, but for the high price, Im not sure Ill be buying more, except for when I need the nice smooth surface.

Had a project I was working on over a year. By the time I completed it there was some rust on my welds as well as the steel plate, with this I was able to quickly remove all rust and get it down to a level I could paint without leaving any deep scratch marks.