Cordless Impact Wrench Kits Impact Wrench Drive Size 1/2 in Square Drive Configuration Straight Max Torque 1 100 ft-lb Battery Included Voltage 18 V Series M18 Cordless Tool Battery Type Li-Ion Brushless Motor Yes Anvil Impact Action Mechanical Max Blows per Minute 2400 Max No Load RPM 1800 Cordless Handle Type Pistol Grip Battery Capacity (2) 5.0 Ah Tool Length 8-13/64 in Tool Weight 7.2 lb Clutch Style Impact Battery Included (2) 35GJ99 Battery Pack Replacement 35GJ99