1-Meter Single mode Duplex OS1/OS2 Fiber Optic Cable (9/125um ) - LC to LC, 1310 and 1550nm Wavelength, UPC/PC polishing. OS1/OS2 fiber conforms to ITU-652.D, TIA/EIA 492 CAAA with premium ceramic ferrule for high speed cabling networks. Specially designed for reliable, long-distance, Ethernet connectivity between switches, servers, router, Firewalls, work stations, sfp+ transceivers, media converters, patch panels, and other SMF optical equipment. Low-Smoke, Zero Halogen (LSZH) Armoured jacket (3.00mm), RoHS Compliant, Resistant to Electrical Interference. 100% rigorously Inspected and Tested for Insertion Loss, Insertion Loss≤ 0.3dB, Return Loss ≥ 50dB