Screwdriver, Bare Tool, Power Source Cordless, Voltage 18 V DC, Brushless Motor No, Fastening Torque 2.9 ft-lb, Free Speed 1,500 RPM, Max. Torque 34.8 in-lb, Retainer Type Quick Change Hex, Drive Size 1/4 in, Number of Batteries Included 0, Battery Capacity Not Applicable, Battery Series M18(TM) REDLITHIUM(TM), Handle Type Pistol Grip