The Makita HM1317C Demolition Hammer offers high durability and excellent demolition performance. Suppression of motor speed during no load reduces vibration of the tool body. The unique Makita AVT Anti-Vibration Technology design employs the pneumatic pressure created in the drill's hammer piston chamber, to move a counter balance in the opposite direction, reducing the impact vibrations at the steel point. This dramatically reduces vibration. Supplied with: 1 x Bull Point, 1 x Side Handle and 1 x Carrying Case. Specifications: Input Power: 1,510W. No Load Speed: 730-1,450/min. Impact Energy: 21 joules. Shank Size: 30mm. Weight: 17kg. Vibration Chiselling: 8.5 m/sec. Vibration K Factor: 1.5 m/sec. Noise Sound Power: 101 dB(A). Noise Sound Pressure: 81 dB(A).