Powered by FUEL??technology, the M18 FUEL??1 in. SDS plus rotary hammer delivers faster than corded speed, corded durability, and all day work on one charge. The Milwaukee POWERSTATE??brushless motor provides 1.7 ft-lbs of impact energy, 0-1, 400 RPM and 0-4,900 BPM. The Milwaukee REDLITHIUM??XC 4.0 battery packs (not included) provide all day work on one charge, 20% more power and 2X more recharges than standard lithium-ion batteries. REDLINK Plus??intelligence integrates full-circle communication between tool, battery and charger to protect from overloading, overheating, and over-discharging. Milwaukee HAMMERVAC? dedicated dust extractor.