2pcs/set connector audio plug amplifier terminal black and red power easy to use

gold-plated one-piece speaker unit hexagonal power amplifier terminal. red and balck plastic insulation jacket, for easier recognition, accept up to 4mm cable diameter with a screw termination. commonly used to ensure a tighter connection of speaker wire to the binding post in the back of the speaker or audio receiver. great tools for using in the audio equipment, industrial instrument,power test and automobile test. package included: 2pcs x connector