Grinding Wheel for Natural and Eng. Stone Alpha® DW Style is an aggressive grinding wheel specially formulated to grind and shape natural stone products. They perform exceptionally well on most granites and harder materials. Alpha® DW Style can be used on most popular angle grinders. They are the ideal grinding wheels to profile edges, smooth out inside sinkhole cuts, smooth rough surfaces, prepare surfaces for lamination, and simple heavy material removal. Alpha® DW Style is well known for its excellent performance on red granites, which are among the hardest granites available today.