The milwaukee m12 cid fuel 635mm 14in hex impact driver has 2 modes to cover a number of applications mode 1 0 1200 rpm 19nm torque is ideal for precision work whereas mode 2 0 2650rpm 135nm torque delivers maximum performance for the toughest applications it also has a bright led light to illuminate the workspace designed to out perform other heavy duty power tools it has powerstate brushless motors for up to 10 times longer motor life redlink plus intelligence providing total system commun