Specifications: Voltage:220-240V~50/60Hz Input power:1600W No-load speed:550rpm Impact rate:3850bpm Impact energy:9.0J Max.drilling capacity: Concrete:38mm Core bit:100mm SDS MAX chuck system Chisel-locking system Anti-vibration system With 2 drills and 2 chisels With 1set extra carbon brushes Packed by BMC