The NL4MPR is 4 pole chassis connector, black round G-size flange, countersunk thru holes, 3/16" flat tabs The NL4MPR has rated current per contact of 30 A rms continuous. The speakON panel mount connectors are the standard chassis connectors for loudspeaker / amplifier interconnections. They feature a unique metal locking system, making contact only once fully locked. The speakON receptacles are robust, versatile and easy to terminate.