The Milwaukee 1-3/4 in. SDS-max rotary hammer has a powerful 15 Amp 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 in case of tool lock up. This feature gives the user a safer experience. The variable speed dial allows the user to set the optimal speed per application. 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. Finally, with advanced AVS (anti-vibration system), the user will feel much less vibration when using the tool.