This closed end wire connector lets you join together multiple wires at the same time. This is particularly useful in applications when resilience against vibration is especially crucial. It is made to create a simple connection for different electrical wiring purposes. Connectors of this type are also referred to as crimp connectors, due to the fact that crimping the insert helps to keep the connection in position. The nylon covering is a strong and durable material that acts as insulation for the copper insert. The tin plating on the insert helps provide protection from deterioration.