... made by black silicon carbide with resin bond, cup wheel,resin cup wheelApplications:It is suitable for grinding and polishing stone,marble ... 2" x 5/8"--11Materials:C (Black Silicon Carbide)GC (Green Silicon Carbide)Grit Size:24#,36#,46#,60#,80#,120#......Bond ... in supplied by reqiured size,type and materials. Cup Wheel for Stone