100% optically tested12-Fiber MTP/MPO Female to Female OS2 9/125 Single Mode Fiber Optic Patch Cables by MILJET meet and exceed industry standard specifications for insertion loss, return loss, and end face geometry. Features 12 high-density lines of LSZH plenum-rated laser-optimized 50-micron fiber optic cabling in a round outer jacket. MILJET Cables on Demand prides itself on product quality and reliability, so we have pre-terminated our cables with Genuine US Connect brand MTP Female Connectors, which are both superior to and backwards compatible with standard MPO connectors. Featuring 3m (10ft) length in a straight-thru (pin-to-pin) wire configuration for direct connection to fiber optic distribution panels, cassettes and couplers. Attenuation at 1310nm ≤0.32dB/km, and Attenuation at 1550nm ≤0.18dB/km.