The Milwaukee M18 FUEL 1 in. SDS Plus Rotary Hammer is the next generation of cordless rotary hammer drills delivering users ultimate jobsite performance and productivity. The M18 FUEL 1 in. SDS Plus Rotary Hammer is the fastest drilling rotary hammer in its class, includes AUTOSTOP Control for enhanced safety, and can drill up to (125) 3/8 in. x 2 in. holes per charge when paired with the M18 HIGH OUTPUT XC6.0 Battery (not included).