색상 = Red 성별 = Male Voltage Rating = 750V ac Connector Size = 4 mm Contact 도금= Nickel, Tin Spring Contact = Yes Length = 61mm 접촉 재료 = Brass 단열재 재료 = Plastic 4-mm banana plugs BDR4 series. 4-mm banana plug, able to take 2 x4 mm banana plugs and with a rear aperture, accessible using a button, to connect wires of 8 to 21 mm.