The Black & Decker SSL20SB-2 20-Volt MAX Smart Select Lithium Ion Drill/Driver includes SmartSelect Clutch; select your project icon and the drill improve power automatically, speed for optimal results. it can be set the speed that suitable for your task. 20V MAX Lithium Batteries give you full running time. holds its charge 5 times it is longer than Plain battery. torque motor delivers up to 175 in-lbs. and the chuck is very strong. Ergonomic handle it was designed for your comfortabily and controlling. Black & Decker's Drill/Driver offer 57% discount and free shipping. see more info