Professioneller Universal: The clamping sleeve of the speakon cable connector is suitable for cables with a diameter of 6-15mm. We believe that because of the performance the speaker plugs will be definitely your best choice 30A rms Power: The speaker cables head has 30A rms continuous rated power. And we are sure that the feature of the audio cable connector will draw your attention greatly Locking System Design: The audio cable connector is designed with extremely precise locking system, which improves screw-type termination for highest pull-out force. And this locking system design make the NL4FC speakon Cable Connector more humanized and easy to operate Good Conductivity: The NL4FC speaker connector adopts the design of copper-plated nickel contacts, which has excellent conductivity, and this performance can make you feel at ease about the speaker plugs and meet your needs greatly Waterproof Plug: The audio cable connector adopts NL4FC waterproof speaker plug which is more safer to use. And we are sure that you will feel assured of the speaker cables head because of the steady function.To ensure you are purchasing the correct part, please check the details for compatibility before ordering. Colour:black+blue Material:Zinc alloy Package Contents: 20 x Cable Connector