The M18 1/2" Brushless Hammer Drill/Driver delivers the most power in its class while maintaining compact size. This Hammer Drill/Driver delivers 725 in-lbs of torque and 0-550 / 0-1, 800 RPM, for a wide range of drilling and fastening applications. The Milwaukee built brushless motor, REDLINK electronics and REDLITHIUM batteries provides more efficient power delivery, for fewer trips to the charger. At only 7.0" long and 4.6 lbs. (with battery), this Hammer Drill/Driver provides excellent control and balance in a compact size, perfect for work overhead or in tight spaces. An all-metal gear case and 1/2" metal chuck provides maximum durability.