The M18 1/2 inch Compact Brushless Hammer Drill/Driver is the Most Compact 18v hammer drill on the market and delivers Over 50% More Run-Time than drills with brushed motors. The Milwaukee built brushless motor, REDLINK Electronics, and REDLITHIUM batteries provide more efficient power delivery, for fewer trips to the charger.At only 7-3/8-inches long and 3.9 lbs. (with battery), this drill provides excellent control & balance in a compact size, perfect for work overhead or in tight spaces. This compact hammer drill delivers 500 in-lbs. of torque and 0-450/0-1,800 RPM, for a wide range of drilling and fastening applications. An all-metal gear case and 1/2-inch metal chuck provide maximum durability.