The bulk fiber optical sc pigtail with?an?LSZH (Low Smoke Zero Halogen) rated jacket, which produces less?toxic?fumes and?no corrosive gases?when exposed to fire or high temperatures,?making it for data center using. Singlemode fiber ensures low insertion loss and high return loss for Very good signal transmission, Fiber pigtails are a great solution for fusion splicing inside of a fiber optic enclosure.