These pistol-grip air-powered impact wrenches have a square drive and a standard anvil length. - They are full-size impact wrenches with high torque output. - The pistol grip has a trigger that is pressed to activate the wrench. - Pistol grips provide ergonomic handling when working on vertical surfaces from the user's waist to chest, horizontal surfaces at mid-thigh or lower, and horizontal surfaces directly overhead. Air Consumption / 22 cfm Air Inlet / 1/4 in NPT Air Pressure / 90 psi Max. Air Pressure / 100 psi Min. Air Pressure / 90 psi Min. Hose Size / 3/8 in Exhaust Location / Bottom Duty Rating / General Duty Breakaway Torque / 600 ft-lb Fastening Torque / 425 ft-lb Free Speed / 8,000 RPM Impact Rated / Yes Impact Sound Level / 99 dB Impacts per Minute / 1,200 Number of Speed Settings / 6 Power to Weight Ratio / 103.4 ft-lb/lb Max. Bolt Capacity / 1/2 in Drive Size / 1/2 in Square Drive Type / Standard Retainer Type / Friction Ring Clutch Style / Twin Hammer Tool Style / Full-Size Vibration Level / 6.5 m/sq sec Overall Length / 7 1/4 in Handle Material / Aluminum Housing Material / Aluminum Handle Type / Pistol Grip Features / Built to withstand harsh environments, Deliver the Same High-Quality Output Time Tool Weight / 5.8 lb Standards / EN ISO 11148-6, EN ISO 15744, EN ISO 28927-2