The HiKOKI DH36DPA 36V Multi-Volt Cordless SDS-Plus Hammer Drill with Brushless technology is part of the HiKOKI 36V Li-ion Slide-on Battery Range and is great addition to anybody's collection, whether just starting out or looking to add to an already established tool kit. The DH36DPA Cordless Rotary Hammer Drill Incorporates variable voltage output from the Multivolt battery. Meaning that the user can run their Rotary Hammer Drill on either 18V or 36V depending on its application. With reactive force control function. Reactive force control (RFC) - When a sudden load is applied to the tip, the slip clutch is activated, or the controller built in the tool body stops the motor and alleviates the phenomenon that the tool body is swung. Three modes can be switched depending on the application. It can be switched to "rotation" "rotation + blow" "blow" according to the application, by the large change lever next to the main body. Features: High efficiency brushless motor Electronic brake