【Powerful Motor】 AOBEN electric Rotary Hammer Drill is equipped with 10 Amp (1100W) motor that delivers powerful impact energy to complete heavy duty projects on concrete, Masonry and metal. 【Easy to Operate】 Three function modes can be easily switched - hammer only (chiselling-only), hammer drill (hammering and rotation), and drill only (rotation only) . There are double switch buttons to change the functions which can last longer compare with single switch button. 【Ergonomic Design】 AOBEN AB2105C hammer drill is compacter and easier to hold and carry. Rubber and 360 degree adjust handle make you less tired during long or complex projects. SDS-plus hammer drill can guarantee the user's safety, and well-designed heat dissipation motor and double anti-dust bottom structure can extend the hammer's use life. 【Tool Kit】 AOBEN hammer drill set include 3 pcs drill bits(size of 8mm,10mm and 12mm), 1 pc flat chisel, 1 pc point chisel, a dirt proof boot, motor lubricant, 2 pcs of spare carbon brush Portable Carrying Case provides the perfect storage. 【Multifunction】 AOBEN Professional rotary hammer Applies to wood, masonry, concrete and steel. Max 1-1/4 inch drilling diameter for concrete and for metal is 1/2 inch.