M20 Watertight Wire Connectors with High quality PA66 nylon material,ensure durability and safety, the contact pin is gold-plated brass, the copper core has the characteristics of corrosion resistance, oxidation resistance, low resistivity, good ductility, high strength and large carrying capacity. You can rest assured to buy M20 Watertight Wire Connectors from our factory and we will offer you the best after-sale service and timely delivery.