Cordless Rotary Hammer Voltage:24V, No load Speed:0-900 rpm No load Impact rate: 0-4140/min Rotation: left/right Batery:2.0Ah or 3.0Ah Ni-Mh Noise: less than 88dB(A) Weight: 3.95kg Insulation Class: 3 Max Cutting Capacity: Concrete dia 20mm Hammer Measure: 332 x 100 x 210 Certification: GS