3.Strengthen impact housing for longest lifetime in its class. 4.Soft grip for comfortable and fatigue free use. 5.Improved Vario-Lock chisel position setting for better self explanation. Specifications Rated Power Input 1100 W Impact Rate 2850 bpm Impact Energy Per Stroke 7.5 J Chisel Position 12 Weight 5.6 kg Lubrication Central Permanent Lubrication Tooth Holder SDS Max