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

Excels at removing mill scale from raw sheet metal

Decent at removing hot rolled millscale when new but gets very hard to use and requires a lot of pressure once it starts to wear, I just used an Aluminum Oxide grinding wheel to get the millscale off and a flap disc to smooth it out. Faster and cheaper even though you’re going over it twice. These weren’t worth the money for me. Three stars since they did work well when they worked and left a beautiful finish.

went thru 7 layers of paint in no time at all,,the whole car took about 3 to 4 discs

Best I found so far to clean metal before tig welding. Cleans mill scale and rust without cloggin. Doesnt last very long but I will buy more when needed.

Used these to remove mill scale on sheet metal. They didn’t last as long as I thought they would.