Get up to 85% faster drilling and 85% harding hitting while reducing vibration to only 10.6 m/s2. With a powerful 8 amp motor, this rotary hammer delivers 0-1, 500 RPM, 0-5,500 bpm and 3.6 ft-lbs of impact energy. This tool also has an all metal gear case and mechanical clutch to provide maximum durability. At only 12- Milwaukee 5268-21 - 1-1/8 in. SDS Plus Rotary Hammer Kit