EPDM Rubber Insulated Secondary Connectors (Submersible), Dual rated connectors for Aluminum or Copper conductors, CO-OX oxide inhibitor is omitted. Clear plated for low-contact resistance. Meets the performance requirements of ANSI C119.1 and Western Underground Committee Guide 2.5 for submersible applications. Fully tested to ANSI 119.4 for Class ‘A’ connectors. Supplied with aluminum set-screws.