The DCD950B is compatible with DeWalt's XRP batteries and the older NiCd batteries. Patented 3-speed all-metal transmission matches the tool to task for fastest application speed and improved run time. Heavy-duty 1/2" self-tightening chuck tightens throughout operation providing superior bit gripping strength. LED worklight provides increased visibility in confined spaces. High power, high efficiency motor delivers 450 unit watts out of max power for superior performance in all drilling and fastening applications. Best in class length for improved balance and better control. Batteries and charger sold separately.