The Makita Hm1317cb Demolition Hammer offers high durablity and excellent demolition performance. Suppression of motor speed during no-load reduces vibration of the tool body. It also has a handy LED lamp that indicates when to replace the carbon brush. 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. Supplied with: 1 x Bull Point, 1 x Side Handle and 1 x Carrying Case. Specification Input Power: 1,510 Watt.No Load Speed: 730-1,450/min.Impact Energry: 21 Joules. Shank Size: 28.6mm.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).Noise K Factor: 2.4 dB(A).Makita Hm1317cb 28.6mm Hex AVT Demolition Hammer 1510 Watt 110 Volt Version. Age Group: Adult. Material: Other Material.