Cablesys (CBS) fiber adapters are designed to connect fiber patch cord connectors together. Each adapter is designed with either a zirconia ceramic sleeve or a metal sleeve for precision alignment. Adapters are made with durable UL® 94 V-0 rated material and metal, which are suitable for up to 500 matings. CBS fiber optic adapters come in various connector types and mounting types. We stock simplex couplers to connect single fibers together, duplex couplers to connect two fibers together and quad couplers to connect four fibers together. Aqua LC adapters are also offered in 24-packs.