Philadelphia stainless steel pneumatic Mixer. Model: PGA-6-2. Portable clamp on mixer. Impeller diameter: 12-1/2 in. Air motor driven for no heat build-up. Motor operates spark free. Speeds can be varied by means of the air control valve. Gear driven for maximum output torque. 2.0 hp, 1750 rpm air motor. Gear ratio: 5-1. Final rpm: 350. Inlets/outlets: (1) 3/8 in. push on air hose fittings. Shaft length: 3 ft. 7-1/4 in. Shaft diameter: 1-1/4 in. Overall dimensions: 11-3/4 in. L x 1 ft. 1/2 in. W x 4 ft. 10 in. H.