Includes 1-3/4-in SDS-max Rotary Hammer - 5426-81, Product Manual 8.8 ft/lbs Impact Energy - heavy duty crank piston mechanism delivers hard hitting performance 450 RPM and 2,840 BPM - delivers fast drilling even in the toughest concrete 2 Speed Impact Mode - low reduces speed (350 RPM) and beats per minute (2,200 BPM) for light materials
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