Hydraulic Driver, Drive Size 1/4 in Hex, Drive Configuration Straight, Max. Torque 450 in-lb, Voltage 18 V, Brushless Motor Yes, Free Speed 3,000 RPM, Impact Rated Yes, Impacts per Minute 4,000, Number of Speed Settings 4, Collett 1/4 in Hex, Cordless Tool Kit Contents Bare Tool, Number of Batteries Included 0, Battery Series M18 Redlithium, Charger Included No, Case Included No, Handle Type Pistol Grip, Built-In Light Yes, Overall Length 5 in, Wireless Tool Tracking No, Power Source Cordless