CVhoislteal-lgoeck:in2g2s0ys-t2e4m0V~50/60Hz Input power: 1700W No-load speed: 100-220rpm Impact rate: 1750-2150bpm Impact energy: 5-19J Max.drilling capacity: Concrete: 55mm Core bit: 150mm SDS MAX chuck system Constant electronics power Variable speed control Chisel-locking system