?SOLDERLESS TYPE - Solderless RCA plugs for speaker wire, No electrical tap, No splicing, no crimping, only a small screwdriver. use this male terminal connector for RCA to connect the audio and video interface of the device, such as security wiring, monitoring equipment, home theater, background music, converter, etc., for transmitting audio and video signals ?SIMPLE TO USE - No need for soldering the wires into these RCA Jacks. Just use a screwdriver and you are done. The terminal space is large enough and the depth is deep enough for the wires to slide into, grips cables very tight. The wires are not easy to slip out easily. The male plug and the female plug will be fully snug on the RCA connector. Screw heads will not stripped. ?DURABLE CONSTRUCTION - The outer skin is made of plastic and other materials; the connector is arc extinguishing pure copper + external galvanized. good transmission, Easy to identify: The green skin is marked with + - positive and negative poles for easy installation. The skin is made of new flame-retardant, anti-sun, anti-oxidation, anti-aging PVG plastic.