modes along with the double switch button allow you to easily switch between according to your needs 3-in-1 Perks Electric rotary hammer drill comes with the ability of fast-switching between three different modes, each providing a different outcome: Chisel Mode - A flat chisel used for cutting or shaping objects like wood, stone, or metal Hammer drill mode - A powerful rotatory pulsing action using to make holes like a hammer on concrete and robust objects Drill mode - A fast and powerful rotatory action to efficiently drill through solid objects Life-Sustaining Built What’s the point of having power and efficiency if it doesn't last forever? We made sure that our powerful hammer drill wasn’t just made out of b-quality materials, but also that it was designed to self-maintain and sustain its life year after year. The cleverly designed heat exhaust system effectively avoids the motor from overheating and protects it from problems caused due to excessive temperature A double layer bottom structure accounts for our hammer drill's anti-dust design which keeps the dust and other residues from settling inside the drill, resulting in an extended use life Specification: Rated Voltage:220-240V(EU&UK) 120V (US) Frequency:50Hz(EU) 60Hz(US)         Input Power:1000W(8A) No load speed:930/min Impact rate: 4200BPM Impact Energy: 4.5J Toolholder:SDS plus Max drilling diameter(concrete):28mm Packaging Size:43.6*34*12.7cm Product weight:4500g Gross weight:5400g Package List: Rotary Hammer---1pc  Auxiliary Handle ---1pc  Depth Guage ---1pc  SDS drill bits  ---3pcs (8/10/12x150mm) Point chisel  ---1pc Flat chisel  ---1pc  Grease Cup   ---1pc Dust Cover   ---1pc BMC---1pc