The M12 FUEL(TM) 2-tool Combo kit is the most capable and most compact 12 V drill driver and impact driver Combo kit on the market. Included is the M12 FUEL(TM) drill driver (2503-20), the most capable, lightest weight and most compact 12 V drill in the market. At only 6.6 in. and 2.8 lbs of weight it is the best drill to use in compact space. It delivers the power to do a wide variety of applications at 1700 RPM?s and 350 in-lbs of torque. Also included, the M12 FUEL(TM) 1/4 in. hex impact (2553-20), the fastest driving speed, most compact with 4- mode drive control impact driver in the market. At 3,300 RPM the impact drives screws over 20 percent faster than competitors. At 5.1 in. in length it allows forunmatched access in tight space. The 4-mode drive control provides greater control over output speed and power forgreater versatility by delivering 0-1, 300 RPM in mode 1, 0-2, 400 RPM in mode 2 and 0-3, 300 RPM in mode 3. Mode 4 is self-tapping screw mode which is designed to reduce walking when starting self-tapping screws as well as reduce overdriving, breaking and stripping out screws. 11495