The D25650K factory reconditioned hammer kit features an 11.5 Amp motor that provides 140 to 280 RPM and 1330 to 2660 BPM. The RPM and impact energy can be controlled by the variable-speed/impact controller and provide a range of 0.73 to 8 ft-lbs of impact energy per blow. The electronic variable speed also ensures that the proper amount of power is being delivered to the motor, providing outstanding drilling and chipping speed and allowing the user to control how fast he or she drills or chips. The soft-start, two-position side-handle mounts and rubber grips help make job site applications easier and more comfortable. Clutches are found on all models. The stop-rotation bit lock allows a user to lock gears inside the tool to unwind jammed bits. The hammer is 18-1/2 long and has a maximum solid bit size capacity of 1-3/4.