Neutrik Speakon NL4FX 4-Pole Cable Connector 4 pole cable connector, chuck type strain relief, dark grey bushingThe industry-standard for loudspeaker connections offer extremely reliable and robust cable connectors with a reliable locking system. They feature solid contacts with screw-type terminals including a stranded wire protection which offer also solder termination.Features Benefits Current rating 40 A rms continuous Up to 50 A audio signal, duty cycle 50% Only 3 parts, easy to assemble High impact materials - long-lasting and reliable Easy and extremely precise locking system "Quick Lock" Improved grip on latch 1 piece strain relief, chuck for 7 to 14.5 mm cable O.D. Color coding possible Improved screw-type termination for highest pull-out force Integrated design guarantees..Made by Neutrik