The Milwaukee 1-3/4" SDS Max Rotary Hammer has a powerful 15A Motor. This hammer delivers 8.1 ft-lbs of impact energy for the most demanding applications. The AUTOSTOP™ E-Clutch prevents over rotation of the tool. With two modes: Rotary Hammer and Hammer Only, the user can drill large holes or do any chipping applications. When chipping, there is a lock-on button that allows the user to chip without constantly pulling the trigger.