Pneumatic Impact WrenchPressure-Feed lubrication System automatically greases the impact mechanism. Exclusive TwinHammer Plus impact mechanism. Pressure-feed lubrication. Adjustable power regulator. Easy to service two-piece construction. Contoured handle for comfort and control. Cycle Rate: 1200 ipm; Drive Size: 1/2 in; Drive Type: Square; Length: 7 1/4 in; Torque: 25.00 ft lb [Min], 350.00 ft lb [Max]; Type: Super Duty; Weight: 5 5/8 lb.