OS2 LC/APC to SC/UPC Duplex Fiber Patch Cable, Corning 9/125 Singlemode Jumper Cord. Corning optical fiber glass 9/125 core, terminated with 1.25m ceramic ferrule LC/APC & SC/UPC polished connectors with Duplex clips. Yellow OFNR PVC 2mm diameter jacketed, Single Mode Fiber, Zip-cord, fiber optic patch cables.