Hitachi DS18DVF3MR 18V Cordless 1/2 in. Drill Driver Kit (Certified Refurbished) Delivers up to 400 in-lbs. of torque to power through tough jobs with ease 1/2 in. keyless chuck offers quick and easy bit changes on the fly Lightweight design (3.7 lbs.) reduces user fatigue and makes it easier to control and maneuver