Create a smear-free surface finish on most soft metals with this Merit surface prep A/O coarse grit TR (Type III) non-woven quick-change disc. Made to fit right angle grinders, this disc is coated with a premium aluminum oxide abrasive grain that delivers a 20% higher cut rate and 50% better performance than competitors. The backing on this disc is made from high loft nylon fibers for longevity and the coarse grit features a proprietary clean bond resin technology that delivers smooth finishes and reduces loading.