The Makita HR3210FCT SDS+ Rotary Hammer Drill with 3 drilling modes of operation Rotary drilling, Hammer drilling or Chiseling. Rotary drilling with hammer support can be selected as can pure hammer-only action for heavy-duty breaking and chiselling. It is fitted with a quick change chuck and an LED job light. It features the unique Makita AVT Anti Vibration Technology design employing the pneumatic pressure created in the drills hammer piston chamber to move a counter balance in the opposite direction to reduce the impact vibrations at the steel point. This dramatically reduces vibration. It is supplied with a side handle, depth stop, bit grease and a carry case. Specification Input Power 850 Watt. No Load Speed 315-630/min. Impact Rate 1,650-3,300/bpm. Impact Energy 4.9 Joules. Capacity Concrete 32mm, Core Diameter (TCT) 90mm. Weight 4.9kg. All vibration figures quoted are Tri-axial to EN60745 2006. Vibration Drilling 2.5 m/sec. Vibration Chiselling 7 m/sec. Vibration Hammer Drilling 10 m/sec. Vibration K Factor 1.5 m/sec. Noise Sound Pressure 89 dB(A). Noise Sound Power 100 dB(A). Noise K Factor 3 dB(A).