Air metal shears are designed for shearing plastic, tin, aluminium, steel and other metals. Ideal for use on duct work and auto body repair. Hardened steel blade cut up to 18-gauge (1.2mm) steel. Contoured throttle lever with positive self-locking, prevents accidental starting of motor. Operating Pressure : 90 PSI. Air Consumption : 4CFM. Free Speed : 2800 BPM. Overall Length : 255mm. Body Diameter : 41mm