Hitachi DV18DVC 18 Volt Ni-Cad Hammer Drill  (Discontinued by Manufacturer) 1.4-amp-hour batteries allow for longer run time and fewer battery charges 22-plus-2 stage clutch for high torque and/or precision driving 2-speed transmission and variable speed switch allow for ultimate speed control Carbon brushes for quick and easy brush changes Comes with a 5-year limited warranty Max torque 380 in/lbs. Variable 2 speed 0-400 and 0-1,500 RPM 0-21,000bpm impact rate 1/2" Chuck 22 stage slip clutch