The DH18DBL is a Brushless Hammer with SDS-Plus Shank and a full load impact rate of 3950 a minute. Features:- Impact Rate 0-3950/min- Drilling capacity in concrete 26mm- Efficient brushless motor works approx. 50% more than the conventional brushed DC motor per battery charge- Reactive Force Control (RFC) system reduces risk of injury from tool overload- Constant speed control- Over current protection- 3 mode action: rotary drilling, hammer drilling or chiseling- Built-in LED light- Remaining battery indicator