... Connector Material: Brass Spring: Beryllium copper Electric current :100-180A6,6.0 mm - gold plated Male and female of the Connector ... 3.0mm, 3.5mm, 4.0mm, 5.0, 5.5mm, 6.0mm, and 8.0mm.3. It is mainly used in ... High-power electrical.5. It has different plastic housing protected.6. It is convenient used in socket. So it is prior ... audio, receiver, enlarger.4.0mm banana plug banana plug for rc helicopter