Impact Driver Kit 1/4i M12

M12 Fuel 12-Volt Lithium-Ion Brushless Cordless 1/4 in. Hex Impact Driver Kit With 2)2.0Ah Batteries, Charger and Hard Case. The 4-Mode Drive Control provides greater control over output speed and power for greater versatility by delivering 0RPM to 1,300RPM in mode 1 0 RPM to 2,400RPM in mode 2 and 0RPM to 3,300RPM 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.