Ridgid R86036K Stealth Force Brushless 18V Pulse Driver RIDGID 18-Volt STEALTH FORCE pulse driver is half the noise of a standard impact driver and up to 2X faster 3 speed settings provide adjustable power and speed for the most demanding jobs as well as precision work LED lights around the front housing to eliminate shadows Hex-Grip micro texture for maximum user comfort 1-handed quick-load bit holder makes changes quick and easy with a snap-load collet, accepts bits as small as 1 in. Chuck Size-1/4-Inches, Maximum Speed (rpm)-2400, Battery Amp Hours-2.0, Battery Power Type-Lithium Ion, Product Weight-3.0 lb.