Cordless Impact Wrench Kits, Impact Wrench, Drive Size 1/2 in Square, Drive Configuration Straight, Max. Torque 400 ft-lb, Battery Included, Voltage 20V DC, Series 20V MAX, Cordless Tool Battery Type Li-Ion, Brushless Motor No, Anvil Impact Action Mechanical, Max. Blows per Minute 2700, Max. No Load RPM 1650, Cordless, Handle Type Pistol Grip, Battery Capacity (2) 4.0Ah, Tool Length 10-3/4 In., Tool Weight 6.8 lb, Clutch Style Push Button, Battery Included (2) 21RV47