POWERFUL MOTOR&VARIABLE SPEED - The 850W motor with 2.7JOULES impact energy, 0-1100RPM, is optimal to complete work projects on concrete, metal, brick, stone, and masonry, etc. Drilling capacity: 1-1/4 inch for concrete, 1-9/16 inch for wood, 1/2 inch for steel; With multi-level variable speed dial, you’ll always remain in total control of your tool. SDS-PLUS KEYLESS CHUCK - Patented SDS-Plus keyless chuck is designed to improve your work efficiency. You never need any tool to change bit’s in-between jobs. Accurate control provides the maximum impact energy transfer. SELECTION SWITCH TO MEET REQUIREMENTS - The Geepas 26 mm, 850 w rotary hammer has a selection switch which helps to switch between various needs. Whether it is hammering, drilling, screw driving, or chiseling, the selection switch helps to switch between the operations efficiently. IMPACT STOP BUTTON - The impact stop button of the Geepas 26 mm, 850 w rotary hammer helps to switch off the hammer mechanism when it is being used drill in metal or wood, or when being used to screw drive an object. ERGONOMIC DESIGN - 1/2 inch drill chuck adapter, also compatible with other non-SDS-Plus bits, can finish a variety of drilling tasks; anti-vibration, the integrated vibration damper can decrease the vibration effectively, to reduce your fatigue; The soft-grip handle prevents slipping off and provides more comfortable grip feeling and better handling of the power tool.