The DeWALT 1-1/8 Inch SDS + Combination Hammer, with its dependable and hard-hitting German engineered mechanism, delivers 4.2 joules of impact energy and long life. The 9.0 amp motor provides high performance and overload protection The durable D25416K with its fast speed of application and lightweight design, makes it ideally suited for drilling for larger diameter mechanical anchors and #3 - #5 rebar plus extended time chiseling. The E-Clutch system provides enhanced control to the user in a bind-up situation and can help minimize sudden torque reaction compared to standard clutches alone. The 3-mode selector allows for easy switching between hammer drilling, rotary only, and chipping only The Active Vibration Control technology employed delivers reduced user vibration for less user fatigue and greater productivity. Variable speed trigger provides full control of bit speed for a variety of applications