Rain Bird wire connectors feature an easy to use, one-step installation to ensure a solid connection. Simply insert the wires and twist. The connectors are filled with silicone gel, so there's no mess or hassle with a grease tube. In addition, our durable connectors are protected with UV resistant materials and can withstand a 600 volt surge. For use in damp, wet, raintight, and submersible locations. Not to be used in continuous submersible applications.