Bolt Capacity 1 in, Drive Size 3/4 in Square Hose Size 1/2 in, Duty Rating General Duty, Breakaway Torque 1,450 ft-lb, Fastening Torque 1,300 ft-lb, Free Speed 5,500 RPM, Impact Rated Yes, Explosive Environment Rated No, Impact Sound Level 105.3 dBA, Impacts per Minute 1,075, Number of Speed Settings 4, Power to Weight Ratio 227.