Single mode patch cord ST(PC)-ST(PC),we are professional manufacture and welcome to visit our factory patch cordSingle mode patch cord ST(PC)-ST(PC)insert loss 0.2dB,Max Insert loss 0.3dB, Repetition 0.1dB,interchange 0.2dB,Working temperature -25 -+80,Insert times >1000 timeOrder length 0.5m,1m,2m,3m,5m, or other lengths available on request patch cord