Powerful Motor: 13 amp industrial motor with 5.5 feet /lbs (7.4 joules) impact energy is designed to concrete and metalworking projects. Wattage: 1500W. The drilling capacity of rotary hammer drill: 1inch/26mm for concrete, 1.6inch/40mm, 0.5inch/13mm for steel. Four Functions: SDS hammer drill’s four different functions: Drilling is suitable for wood, steel, etc. Chiseling is ideal for concrete or brick. In addition, hammer drilling is ideal for work, and chisel position adjustment adapts to various work scenarios. Variable Speed: Our rotary hammer can reach 850 r/min 6-step adjustable speed and 4200bpm max impact frequency. Various applications can be completed by adjusting the 6 levels no-load speed variable trigger. Humanization Design: The 360° adjustable handle can be applied to different work, and the upgraded vibration control system is designed to decrease the vibration effectively. The detachable depth gauge allows you to determine precisely how the drill bit should be. Wide Application: Reliable SDS plus hammer drill is suitable for professional or daily home users. The combination rotary hammer will make it an easy job, no matter remove tiles or demolishing brickwork. Besides, tools are well stored and sorted in a compact case.