M18 FUEL ONE-KEY 18-Volt Lithium-Ion Brushless Cordless 1/2 in. Hammer Drill/Driver Kit with Two 5.0 Ah BatteriesThe Milwaukee M18 FUEL 1 2" Hammer Drill with ONE KEY kit is the industry's most powerful hammer drill, delivering Up To 60% More Power, is Up To 1. 5" Shorter Length and delivers Up To 2X Faster Speed Under Heavy Load. The POWERSTATE Brushless Motor produces 1,200 in lbs of torque and 2,000 RPMs providing users with fast drilling through demanding applications. At 6. 9" in length, this is the most compact hammer drill in its class, giving users