The DEWALT DCK240C2 20v Lithium Drill Driver/Impact Combo Kit (1.5Ah) is comprised of the DCF885 20V MAX Lithium-Ion 1/4-Inch Impact Driver which is compact (5.55 front to back) and lightweight (2.8 lbs.) designed to fit into tight areas. This unit offers one-handed loading 1/4 hex chuck accepts 1 bit tips and also features a 3 LED light ring with 20 second delay to provide visibility without shadows. A belt hook is also included for portability on the worksite. The DCD771C2 20V MAX Lithium-Ion Compact Drill/Driver is also compact and lightweight designed to fit into tight areas. This drill/driver offers a high performance motor that delivers 300 unit watts out (UWO) of power ability which allows for a wide range of applications. This unit also features a high speed transmission that delivers 2 speeds (0-450 & 1 500 rpm) for a range of fastening and drilling applications. The 1/2 single sleeve ratcheting chuck provides tight bit gripping strength and the ergonomic handle delivers comfort and control