SKIL 2240-01 12-Volt 3/8-Inch Drill/Driver Kit 15+1 Application Settings - Matches the driving power to your specific applications and prevents screw stripping Variable Speed Trigger - Lets you control your drilling speed when precision matters most 3/8" Keyless Chuck - For fast and easy bit changes On-Tool Bit Storage - Allows you to conveniently access bits Compact and Lightweight - For less user fatique