DEWALT DCD910KX 12-Volt Xrp Drill/Driver Kit XRP extended run-time batteries provide long run-time and battery life Patented 3-speed all-metal transmission matches the tool to task for fastest application speed and improved run time Heavy-duty 1/2-inch ratcheting chuck helps prevent bits from slipping and falling out LED worklight provides increased visibility in confined spaces High power, high efficiency motor delivers 285 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