... on both ends.Product Description:DescriptionMTRJ-DX-MM Optical fiber patch cord Φ2.0 Appearance /No crack, No scar, good ... ,200times, 10times/minutes, ±80°Insertion loss change < 0.1,Return loss change< 5, No flab, No distortionPackage ... , 12 months quality gurantee.*PVC Plastic Bag(18*25 mm) with a test report.*White Carton(40*40* ... Telcordia GR-326-Core standard MTRJ-DX-MM 2.0 Optical fiber patch cord