Bosch Bare-Tool PS40B 12-Volt Max Lithium-Ion Impact Driver (Tool Only, No Battery) 60-Percent more torque than 18-Volt drill and driver - 800-Inch lbs of max torque Bosch designed hammer and Anvil system - delivers 1,800 RPM and 3,000 BPM Led light ring - 3 leds illuminate work area for use in dark areas Spring-loaded impact mechanism - reduces user fatigue 1/4-Inch hex drive with quick release