Perfect for protecting cables and not easy to loose or rotate after tightening, so as to effectively improve the service life of the plug. Made of high quality material, PBT rubber washer design, heat and dust resistant, equipped with lock nut and washer to seal around your wires Easy to install, no need to disengage the fixed terminal, the cable can be inserted directly through and then tighten easily, the other end of the joints can be either connected to the equipment box Perfectly suitable for pendant lamps, ceiling lamps, glass insulating lamps, tables and floors as well as many other applications, including wiring fans and small household appliances.