30M/99FT FC/UPC to SC/APC SM DX LSZH 3.0mm Indoor Fiber Optic Patch Cord, FC to SC Single Mode 9/125?m Duplex FC-SC Optical Fiber Jumper Cable Compatible with OS1 OS2-XFUSA121-30 The high-precision coupling assembly with high-precision halogen-free ceramic ferrule (vertex offset: 45?m) has excellent light transmission, repeatability and exchangeability, and a service life of more than 1000 mating cycles. Low insertion loss (?0.3dB) and high return optical loss (UPC 55dB, APC 65dB), 100% insertion loss test, return loss test, fiber end face inspection and Interferometric testing. The protective outer sleeve is made of low-smoke halogen-free (LSZH) material for installation in demanding enclosed spaces, and the inner layer is made of aramid material to increase the tensile resistance of the fiber optic patch cord. It has excellent mechanical durability, high reliability, stability, and excellent environmental adaptability. Compliant with Telcordia, GR-326-Core, IEC, ITU-TG and RoHS standards, it has excellent compatibility and can connect any fiber optic equipment and products that meet the standard (Including FTTH optical equipment, switches, optical modules, ODF, WDM, optical transceivers and optical test equipment OTDR, OPM, OLS, etc.). Buy with confidence. Check out our reviews. Also, happy to combine shipping to save you when you buy multiple items.