This is insulated banana plugs(4mm) / Connectors and socket jack connectors(for 4mm banana plug) for use in home audio and LIPO battery, car, boat, modern airplane ,speaker ,ESC.
Accommodate cable with wire size up to 4mm.
single screws locking, no soldering,and the male banana plug
Have a useful jack.
Accepts 8AWG to 20AWG speaker wire
Price is for the pair (one black and one red)