The Bosch PS42N 12V Max Brushless Impact Driver is a lightweight, high-efficiency 1/4 In. hex driver. The compact PS42 has a 5.4 In. head length and weighs just 1.6 Lbs. (tool only, not including battery), but it is a powerhouse that produces a max torque of 975 In.-Lbs. The Bosch performance control system supplies two speed settings ? one for high speed and one for high torque ? with no-load rpm ratings of 0-1,200 and 0-2,600 and no-load ipm ratings of 0-2,700 and 0-3,100. The driver is ideal for repetitive driving tasks. It has a brushless motor and all-metal gearbox allows for efficiency, runtime and long life. It has an impressive runtime, provided by the lightweight 12V Max Power System, and a three-LED light ring to Illuminate dark work spaces.