Impact wrench (ep500 1") We have many kinds of impact wrench. Ep500 1" has gotten ce certificate. Rocking dog struture. One of the most popular impact wrenches in the market. Suitable for screw and uncrew work of big truck and lorry. It also can be used in the maintenance of bus and general equipments of large machines. Weight kg(lb.):13.75(30.25) Length mm(in): 540(21.3)