SC/UPC to SC/UPC duplex single-mode 9/125 fiber patch cord, 1m length typical insertion loss: 0.2 dB, return loss &gt; 53 dB fiber jacket 3.0mm, yellow color, zipcord, operating temperature: -40 to +75 Celsius degrees each cable assembly is manually tested and verified each cable assembly is individually sealed and labeled label mentions measured loss on patch cord