Siemon MT-RJ connectors pack all the benefits of duplex fiber optic performance into a compact "RJ" style design. Terminations are quick and easy, utilizing a proven no epoxy/no polish method, which takes less than 2 minutes total less than one minute minute per fiber! Siemon MT-RJ connectors feature two fibers factory-terminated to the ferrule with protruding stubs engaged within a pre-installed splice mechanism. Just prep the cable and insert the fibers into the connecter to complete termination. No epoxy or polish is necessary.