Complete Set Configuration: 4 sets of 3-Pin AC PowerCon Male and Female Head, each including 1pc male and 1pc female connector Durable Material Construction: Inside is metal binding post and outside is wrapped by bakelite plastic for power cable connection plug Secure Locking Mechanism: After the male and female docking, they are tightly connected and will not loosen or fall off during operation Versatile Application: Used for stage lighting power cable connection plugs, also for speaker audio cable connection plugs Compatibility Requirement: Your stage lighting or speaker must be equipped with the same model power connection jack, otherwise you can not use it Professional Grade Connector: Features 3 conductor equipment AC connector with contacts for line, neutral and pre-mating ground contact for safe power connection Compatible Design: Works as powercon adapter compatible with neutrik Nac3mpa Powercon specifications for panel mount and cable applications The Mating male and female input powercon plugs is a locking 3 conductor equipment AC connector with contacts for line, neutral and pre-mating ground contact. It replaces appliance couplers wherever a very rugged solution in combination with a locking device is needed in order to guarantee a safe power connection.