Large-diameter Plastic Optical Fiber (POF) for maximum signal clarity.Polished optical terminations for minimum signal loss.Robust construction for the most demanding applications.Connector: Toslink to Same.Length: 3 ft The OPM 300 series features metal headshells, metal guides, and heavy duty outer jacketing. For use with ADATs and other Toslink equipped recording gear. The OPM Series is Hosa's Premium fiber optic cable. It is a robust cable designed for the rigors of the road where plugging and unplugging is routine. It features metal headshells, metal guides, and a thicker outer cable jacket for outstanding durability.