"Our POF (Plastic Optical Fiber) SMI to SMI Duplex patch cords are constructed of durable, RoHS compliant jackets and are available in multiple lengths. These assemblies feature the popular SMI style connector, which is being utilized in industrial data transmission, Local Area Networks, home networks and medical applications. These cables feature a 1.0mm Step Index PMMA plastic fiber and 2.2mm jacket OD. Contact us today with your custom length requirements."