The M18 FUEL™ 1-9/16” SDS Max Rotary Hammer is the first to world 18V SDS Max cordless solution. By utilizing proprietary M18 FUEL™ technology, the 1-9/16” SDS Max rotary hammer is able to drill as fast as a corded SDS Max rotary hammers, deliver corded durability, and provide over 20 minutes of continuous chipping.