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 percent higher cut rate and 50 percent 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.