Supertech Premium Gold Plated Toslink Digital Optical Fiber Audio Cable With Metal Housing and Soft Black Jacket (6 Feet Silver) High quality metal connectors for long-lasting durability and performance Precision-polished fiber terminations minimize internal reflections for improved digital signal transfer 24K gold plated plug , OD6.0mm soft black jacket, Low onnection Loss Optical cables transfer the signal using light; thus completely eliminating any chance for RFI, EMI Connects audio components to your audio or home theater system