'8-pole male chassis connector, G size square metal housing, countersunk through holes, 3/16'' flat tabs. This connector is accepted in audio equipment designed to IEC 62368-1 due to its certification of components to IEC 61984 standard. speakON panel mount connectors are the standard chassis connectors for speaker/amplifier interconnections and feature a unique metal locking system, establishing contact only when fully locked. The receptacles are robust, versatile and easy to finish.'