The most compact hammer drill/driver in its class is up to 20% faster in concrete than the competition. Built with a Milwaukee® 4-Pole Frameless Motor, this M18 TM cordless lithium-ion ½in hammer drill/driver delivers best-in-class 550 in -lbs of peak torque with the XC Extended Capacity REDLITHIUM™ Battery (sold separately). A variable-speed trigger provides speed control between 0-1,700 RPM on high speed and 0-550 RPM on low, with 0-29,000 BPM. This maneuverable, ergonomic hammer drill/driver is the only one in its class with an all-metal gear case for maximum durability, even on the most challenging worksites. Use with the REDLITHIUM™ Compact or Extended Capacity Battery Pack for more work per charge and more work over pack life than the competitors.