Milwaukee 0756-22 28-Volt Cordless V28 Lithium-Ion Compact 1-Inch SDS Rotary Hammer with Case Powerful 28-volt rotary hammer tool 28-volt reversible motor delivers 4,700 Bum and 2.1 ft./lbs. of impact energy Up to twice the running time of 18-volt tools Three operating modes: hammer drill, drill only, and chipping 5-year limited manufacturer's warranty