The RS25GB is a black Test Receptacle with socket type contacts. The receptacle has color-matched nylon caps and bodies. All plastic parts of a receptacle are molded through in the same color to permit more rapid and accurate circuit identification on both the front and back of the panel when installed. Wiring connections are made to a threaded stud by wire wraparound, by lug or bus bar connection. The SUPERCON? electrical connector incorporate many advanced engineering features designed to provide safe, rapid and positive panel board connections.