Monster MC 400DFO-4M Advanced Performance Toslink Fiber Optic Audio Cable (4 meters) High Performance Fiber Optic Cable with Special Polished Low-Loss Connections for CD and MiniDisc Heavy-duty molded connectors for long-lasting durability and performance. Precision-polished fiber terminations minimize internal reflections for improved digital signal transfer. O ring rubber grip allows easy connector handling. Heavy-duty strain relief prevents fiber and connector damage during cable installation or removal.