Dual solderless plug screw type banana plug-32mm X 57mm.
This is a black dual banana plug connector.
This is a red dual banana plug connector.
These rugged stackable banana plug to banana plug Test Leads are ABRA's bestsellers. Come in different lengths of red, black, blue, green, white. Wire:18AWG. Voltage: 50V Hands On. 600V Hands Free. Amps: 15.