... Product Specifications:· Grain materials: Silicon carbide or Aluminum oxide· Grit size: P40, P60, P80, P100, P120, P150, P180, P220, ... P240, P320, P400, P600· Wafer Size: 13", 14", 15", 16", 17", 18", 19", 20", 21", ... 22", 23", 24"· Sheet Size: 3-5/16" x 11", 3-2/3" x 11 ... 1/2", 4-3/16" x 11", 9" x 11"· Roll size: Width 1", 1-1/2", 2", 3", 4", 5", ...