This is an industrial quality demolition hammer.This jack hammer uses 2500W copper wire motorand aluminum alloy reinforced gearbox. Gear and lubricating oil system have special treatment, electric jack hammerwhich can greatly improve the hammer force and service life of impact. Features: 1) Professional electric jack hammer; 2) electric demolition hammer Strong motor 1500w; 3) electric hammer drill Aluminium gear box and hammer tube; 4) Externally-accessible brush caps; 5) Trigger switch with lock-on button; Model No HWLH650 Rated input power 2500w Rated voltage 220-240V/110v Rate frequency 50Hz/60Hz Impact rate 1400r/min Impact energy 60.0J Tool holder Hex 30mm Machine weight 20 kgs Accessory 1pcs Hex point chisel 30x400mm 1pcs Hex flat chisel 30x400mm 1pcs Auxiliary handle 2pcs wrench1pcs grease pot Certificates GS ISO CE