Model DTD153 is a Cordless Impact Driver powered by 18V Li-ion battery and developed based model DTD129. Includes a 1/2" impact socket set with sockets 8, 10, 12, 13, 14, 15, 17 and 18 mm along with a 1/4" Hex to 1/2" Square converter - ideal for use with Impact Drivers as well as Impact Wrenches. Brushless motor One touch sliding chuck for easy bit installation and removal. LED job light Ergonomic soft grip Electric brake Variable speed control by trigger Forward/reverse rotation Compact overall length.