Campbell Hausfeld's Commercial line of products feature the heavy duty performance and durability needed by construction workers, contractors, mechanics and others for demanding work. The CL1502 is designed for everyday automotive, construction and farm work. The powerful pin clutch design provides 500 ft. -lbs. of maximum torque. Working torque of 40-300 ft. -lbs. 1000 impacts per minute. 5. 1 SCFM average air consumption. 1/4-inch air inlet and minimum hose size of 3/8-inch.