The Makita HR3210C SDS Plus AVT Rotary Hammer Drill 850 Watt 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 has a soft start operation to ensure a smooth and even start every time, and the torque limiter stops the drill when the bit hits against reinforcements. It also has a built in job light.It features the unique Makita AVT Anti-Vibration Technology design employing the pneumatic pressure created in the drill s 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. Input Power: 850W.No Load Speed: 315-630/min.Impact Rate: 1,650-3,300/bpm.Impact Energy: 5.0 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/sec².Vibration Chiselling: 7 m/sec².Vibration Hammer Drilling: 10 m/sec².Vibration K Factor: 1.5 m/sec².Noise Sound Pressure: 89 dB(A).Noise Sound Power: 100 dB(A).Noise K Factor: 3 dB(A).