... for life.1. Banana plug is gold or nickel plated.2. The sizes include: 1.4mm,2.0mm, ... 3.0mm, 3.5mm, 4.0mm, 5.0, 5.5mm, 6.0mm, and 8.0mm.3. It is ... battery, electro-hydraulic governor.4. It is convenient used in socket. So it is prior to use in High-power electrical ... .5. It has different plastic housing protected.6. It is convenient used in socket. So it is prior to use ...