PRODUCT DESCRIPTION The Trend Networks R157052 is a fibre kit comprising of 1x 1310nm and 1x 1550nm 1000BASE-BX SM bidirectional SFP Transceivers, 2 x 2m LC-SC and 1x 2m LC-LC simplex SM patch cord and 1x SC/SC duplex through adapter. Designed for us with the SignalTEK NT Network Transmission Tester.