WMYCONGCONG 20 PCS 4mm Banana Female Socket Jack Mount Connectors for Banana Plugs Amplifier Terminal Binding Post

4mm banana plug socket suitable for 4mm banana plug Colorcoded Red and Black plug good visibility on the wire connecting red commonly means an active or positive terminal black indicates an inactive or negative terminal The binding posts are made of zinc alloy plastic Have good wear resistance and stable performance Good conductivity ensure steady signal transmission and good acoustical output Easy to use Easy to plug and unplug By turning the rotary button Screw connector fitting no soldering needed standard size fits most speakers you can solder the wires on or just twist them on Wide Application Commonly used on electronic test equipment to terminate attach a single wire or test lead Package Content 20 4mm Jack Socket Female Binding Banana Plugs Terminal Connectors Great connectors for loudspeakers and audio amplifiers as well as other electrical equipment.