Fluke Networks MRC-50EFC-SCSTKIT Encircled Flux Compliant Test Reference Cord Kit for Testing 50 &micro;m ST Terminated Fibers Tests ST connections Two 50 micron SC/ST Encircled Flux Compliant output cables and two 50 micron ST/ST input cables Compatable with the Fluke Networks Multimode 50 micron Certifiber Pro and Simplifiber Pro Each cable is 2 meters Tests OM2, OM3, and OM4 fibers