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 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.