Rosen manufacture ceramic sleeves that are made of advanced zirconia ceramic material.Our zirconia ceramic sleeves are manufactured by extrusion and machining processes.It has excellent concentricity, high-precision inner and outer diameters.Zirconia ceramic sleeves are widely used for optical adapters,receptacles,fiber-optic connectors, attenuators and fiber stubs etc. optical communication industry.We offer SC standard zirconia ceramic sleeve and LC zirconia ceramic sleeves.Include split sleeve,precision sleeve.Also accept customized sleeve according to clients’ requirements.