Rapid Strip AO coarse grit non-woven depressed center disc with your right angle grinder as an alternative to wire brushes for tough stripping jobs. Made from aluminum oxide to ensure longevity, the disc features an open-web construction that reduces loading. The advanced resin bond helps prevent shedding, gouging and snagging, reducing time spent on rework. Great for stripping coatings and removing rust and parting lines, this coarse grit disc is appropriate for use on soft carbon steels, cast iron, concrete, aluminum and other softer surfaces.