Ceramic ferule, with snap fastening and flange, blue, duplex, * without screws *, PVC housing, ceramic sleeve, item information SC Duplex couplings in colored plastic housing. Fastening options via clips, also using sheet metal or threaded screws, these are available as accessories. Connector type connection 1 SC-Duplex Connector type connection 2 SC-Duplex Design SC-Duplex Dust protection cap Yes Material of the housing Plastic Type of fastening Screw/snap Material of the sleeve Ceramic