DeWalt D25553K Spline Rotary Hammer, 1-9/16"Motor provides high performance and overload protection while impact energy provides fast drilling and powerful chipping, rear handle mount for increased user comfort in down drilling applications, factory set clutch reduces sudden, high torque reactions if bit jams, trigger lock on, rubber grip. Highlights: 12. 0 Amp motor high performance and overload protection, 490 rpm, 3300 bpm 8. 0 ft lbs of impact energy provides fast drilling and powerful