12-Strand Yellow Armored Indoor Singlemode Fiber Cable OS2 9/125um — Corning SMF-28 Ultra, Riser-Rated Spool 500 ft

500 ft spool of yellow indoor singlemode fiber containing 12 strands of OS2 9/125um Corning SMF-28 Ultra, built for high-performance, long-distance links. Corning SMF-28 Ultra provides low loss and controlled dispersion for reliable signal transmission over extended runs. Protective construction includes spiral steel armor to resist crushing and physical impact, plus Aramid yarn reinforcement for additional tensile strength and damage resistance. Riser-rated jacket meets riser application requirements and applicable building fire-safety codes, making it suitable for vertical indoor installations.