The Milwaukee M18 FUEL 1-9/16 in. SDS Max Rotary Hammer is the first to world 18-Volt SDS Max cordless solution. By utilizing proprietary M18 and M18 FUEL technologies, the 1-9/16 in. SDS Max rotary hammer is able to drill as fast as a corded SDS Max rotary hammer, deliver corded durability, and provide over 20-minutes of continuous chipping. POWERSTATE Brushless Motor delivers 5 ft./lbs. of impact energy for the more demanding, heavy-duty applications. Including dry coring and medium-duty chipping in both concrete block and reinforced concrete.