closed-end wire connectors crust made of nylon, long copper inside spread the scope of wire interface closed-end wire connectorscrust made ... UL, fireproof 94V2Usage: RCCN closed-end wire connector can be used to wire connect in the electrical equipment, ... wire away, insert it into the connector, pushed down by clamp tool YAC-6Certificates: UL, CE, CSA,CCC closed-end wire connectors,electric connectors ...