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

This product works awesome at removing mill scale and rust to prep for welding or painting. They are very expensive so I am cautious to only use this when needed, otherwise I use cheap flap discs. Definitely worth having one or tow in your garage though.

Be careful here.3m part number 29900 is not silicon carbide,it’s aluminum oxide.

Got the actual disc as advertised. Works great. Given the proper selection of the correct abrasive 3m are often the best.

Lasted for about 50 seconds before worn down to nothing, yep I timed it... Went back to standard wire, and flapy disk for rust/scale removal.

Great product. Works exceptionally well

Ok so these are ludicrous overpriced but I decided to give them a shot after reading that they last a long time. Performance on steel is top notch. Tore right through light rust and mill scale almost effortlessly, leaving a surface that is ready to weld. Durability- I got maybe 30 minutes out of one pad. That doesnt seem THAT bad until you consider that these are $15 a pop. Im sold on the concept but not this particular product at this price point. Going to try some cheaper options under $10.

Best and fastest way to remove mill-scale from steel.

Exactly what I needed to remove mill surface from plate steel when prepping to weld-no other abrasive product that I have tried compares to this-perfect! Typical 3M quality. Longevity of the disc is as yet unknown,but is a minor concern for me-I will purchase more if need be....

Quickly removed mill scale on some tubing I tested it on. Very happy with this purchase and will continue to get more as needed.

Works great and lasts longer