Audio and video transmission: the RCA audio cable connector screws the cable to the terminal, then connect the RCA cable. Very suitable for small electronic audio and video projects and CCTV applications. (Note: the third line must be connected to achieve video transmission) Hi-Fi audio stability: 24K gold-plated terminals, oxidation-resistant and durable, Hi-Fi audio and noise reduction, anti-electromagnetic interference. This soldering RCA plug is easier to solder, the connection is more tight after soldering, the wire will not be pulled or curled. This RCA audio jack is an accessory of excellent materials, ideal for installers professionals or home theater audiophiles who want to make their own advanced RCA cables. Suitable for 14-22 AWG. Suitable for AV equipment, mixers, microphones, amplifiers, KTV, CCTV and more. Widely used in various branch lines and engineering decoration.