More Product Images ANI403 flyer pdf ACDelco Service Parts List - ANI403 ACDelco Tool Manual - ANI403 ANI403 Professional 1/2" Impact Wrench - 650 ft-lbs Features Powerful and durable impact mechanism TWIN HAMMER. Forward: 6 speed; reverse: 6 speed. Durable aluminum alloy housing Front exhaust design. Specifications Model Number ANI403 Square Drive 1/2" Square Max. Torque 650 ft-lbs (880 Nm) Working Torque Range 50~450 ft-lbs (67~609 Nm) Standard Bolt Size 5/8" (M16) Free Speed 8,000 RPM (/min) Air Consumption 5.3 CFM (150.0 l/min) Overall Length 7-1/8" (180 mm) Air Inlet 1/4" Air Pressure 90 PSI (6.2 Bar) Air Hose 3/8" (10 mm) Sound Pressure Level (LpA) 98.39 dB(A) Sound Power Level (LwA) 109.38 dB(A) Vibration Level 2.98 m/sec^2 Net Weight 5.58 lbs (2.56 kg)