A cutting disc made of a hard abrasive and reinforced with fiberglass. It is 0.045" (1.2 mm) thick with a diameter of 1 1/4" (32.0 mm) 5 per package. Ideal for cutting, grooving and trimming all kinds of materials--including metal, wood and ceramics. You can use it to cut screws and rusted bolts, make slots in screw heads, trim castings and more.