... model hammer drill: 1))drill,chisel and hammer function; 2)variable speed; 3)Carbon brush Hammer Drill 1) Drill capacity: 24mm 2 ... Frequency: 50/ 60Hz 4) Rated input power: 780W 5) No-load speed: 0 - 1,100rpm 6) Efficient and for long time constant ... , chisel and hammer function 8) Positive and negative rotation, electrical variable speed 9) Carbon brush quick change 10) Professional item Inner packing ...