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 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. 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)