Milwaukee 1-1/8" SDS Plus Corded Rotary Hammer Kit (5268-21) Powerful 8-amp motor: Delivers 0-1,500 RPM, 0-5,500 BPM and 3.6ft-lbs of impact energy All Metal Gear Case: Provides Maximum Durability for Jobsite Conditions AVS Anti-Vibration System: Minimizes vibration for maximum comfort. Minimized Vibration to 10.6 m/s Mechanical cluth: Protects the motor when the bit binds up Variable Position Chisel Stop: Allows material to be adjusted, regardless of orientation