The abrasive of the centerless grinding wheel is available in dark aluminum oxide,white aluminum oxide,green silicon carbide,pink aluminum oxide,and monocrystalline aluminum oxide.The grit size is F46-150.This product comes in different sizes anf exteriors.Its diameter is 300mm,350mm,500mm or 900mm.Its thickness is from 50mm to 150mm and its height is from 127mm to 305mm.