The connector shell is made of flame-retardant nylon PA66/PC new material, and the inner guide rail is made of all copper material. It can be used for both soft and hard wires, with 1 in and 1 out, and a wiring range of 0.08-4.0mm ² (Single hard wire), 0.08-4.0mm ² (Multi strand flexible wire), safer, more convenient, and faster than traditional wiring methods in the past.