4" Abrasives Master Strip Discs are the perfect choice for cleaning and stripping metal surfaces. Simply attach to your angle grinder and these discs allow you to remove scaling, oxidation, or clean up weld lines. These strip discs are extremely versatile and are specially designed to strip quickly with minimal under material loss. Each Abrasives Master Stripper Disc is made with premium purple non woven, nylon webbing adhered to an extra strong fiberglass backing. The purple webbing is the new and improved webbing material, offering a longer life and improved cut rates compared to Black colored Clean & Strip Disc. Easy Strip and Clean discs are great for auto body shops needing to remove paint and under coating while still protecting the vehicle body.