Powerful motor: Powerful 1,500 Watts 12.5 AMP motor delivers 0-920 RPM and 0-4,250 BPM, 4.43 ft.lbs.(6 Joules) of impact energy for fast drilling or chipping in concrete, cement, brick, masonry, wall and other hard materials Easy to operate: Rotating Dial to set tool to 4 specific mode operation for "Rotation Only", "Hammering with Rotation" , "Hammering Only" for multiple applications. Vario-lock is allowed for desired positions of "hammer" Easy of use: SDS-Plus bit system provides tool free bit changes with automatic bit locking, dust protection and maximum impact energy transfer; 360°adjustable accessory handle applies to different work accasion and the upgraded Anti-Vibration Technology designed to decrease the vibration effectively, reduce fatigue and offer a better using experience Security control: The 6-speed transmission enables user to match the speed to the application for greater versatility, control and accuracy; Overload clutch protection saves your wrists when the drill bit snags and extend motor's lifespan Practical tools: The heavy duty rotary hammer 32MB is applicable for all home renovation projects and lightweight demolition projects,no matter remove tiles or demolishing brickwork.max drilling diameter for concrete is 1-1/4" and for metal is 1/2" and for wood is 1-9/16". We provide 24 months warranty service SDS-Plus Heavy duty Rotary Hammer Drill