Hitachi DH38YE2 1-1/2-Inch Spline Shank Rotary Hammer, 2 Mode Powerful 8.4 Amp motor delivers 950 watts of input power for maximum productivity Two modes of operation - hammer only and hammer drilling controlled by the simple turn of a knob Produces 5.9 ft/lbs of impact energy for faster drilling and chiseling through concrete Low vibration levels of only 18.8m/s2 (full load) for more comfortable operation in hand Low noise levels of only 95.2 dB (full load) for a less noisy work environment Safety clutch shuts down rotation in the event of a bound bit for improved user protection Dust resistant cover protects the tool from dust and debris and prolongs tool life Sealed grease system adds to the tools maintenance free operation Soft elastomer handle provides a secure grip and absorbs vibration for comfort and control during operation Adjustable 360 degree side handle provides better control and can be removed easily