3M Scotch-Brite Scotch-Brite™ Clean and Strip XT Pro Disc, 4-1/2", 5/8"-11, Threaded, Extra Coarse, Silicon Carbide, Type 27, 05574/XO-DC (10-Pack)RECOMMENDED APPLICATIONS: Cleaning, finishing, surface preparation, rust removal, light scale removal and coating removal WORKS EFFICIENTLY AND FAST: Quickly removes rust, paint, light mill scale and coatings from metal RE ENGINEERED FIBER: High strength fiber resists chunking and performs well on edges Scotch Brite Clean and Strip XT Pro Disc Featuring silicon carbide abrasive mineral incorporated into an open nylon web, it effectively removes rust,