Cut accurate flange and ring gaskets with the heavy-duty Motorized SM4 Rotary-Style Gasket Cutter. Primarily designed for metallic gasket materials such as soft steel, copper, zinc, and brass. Also cuts non-metallic materials such as hard fiber, rubber, and PTFE. Cuts gaskets with a face width of 1/2" to 8 3/4"; from 3" I.D. to 28" O.D. Accessory scale bars (not included) extend cutting range from 28" I.D. to 54" O.D., or 54" I.D. to 80" O.D.