AOFPLUS's distribution fiber optic sc pigtail built with premium zirconia ferrules and durable composite hardware, these pigtails deliver excellent optical performance, durability, and consistency for modern network applications, and each pigtail undergoes rigorous quality testing to ensure it meets or exceeds industry standards and the most demanding performance specifications, with SC/UPC connectors with for easy identification and reliable performance, Singlemode fiber ensures low insertion loss and high return loss for optimal signal transmission, This is a high-quality singlemode OS2 Corning SMF-28 Ultra fiber optic pigtail featuring SC/UPC connectors.