Internal air compressor,no need external to provide pressure and water. Low noise, low dust.
One knob can switch 4 gears,can be adjusted according to the speed of percussion and rotation.
HRD204HAND-HELD ROCK DRILL
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Outline：Internal air compressor,no need external to provide pressure and water Low noise, low dust One knob can switch 4 gears,can be adjusted according to the speed of percussion and rotation
Instructions /instructions
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