Impact Driver, Drive Size 1/4 in Hex, Drive Configuration Hex, Max. Torque 1,700 ft-lb, Voltage 18 V, Brushless Motor Yes, Free Speed 3,600 RPM, Impact Rated Yes, Impacts per Minute 4900, Drive Type Standard, Number of Speed Settings Continuous, Collett 1/4 in Hex, Cordless Tool Kit Contents (1) Bare Tool, Number of Batteries Included 0, Battery Capacity 2.0 Ah, Battery Series M18 REDLITHIUM, Charger Included No, Case Included No, Handle Type Pistol Grip, Built-In Light Yes