portable demolition hammer,more powerful easy to operate low vibration and noise power ... power tools such as angle grinders, electric drills, marble cutters, hammer drills, rotary hammers, blowers and so on for professional use ... 100% interchangeable with leading brand for example, BOSCH, MAKITA, HITACHI, DEWALT, HILTI, LG, AEG, and so on. OEM service is available ...