Power: 220-240V at 50/60Hz Power Input: 1050W Speed Without Load: 2300 rpm Maximum torque: 550 NM Square drive: 1/2" Rubber-coated aluminum gear box with six sockets (17, 18, 19, 21, 23, and 24 mm) Packed by BMC with 1 set of extra carbon brushes and 1 piece of 125mm adapter.