This LC fibre keystone jack adapter is designed for single mode OS2 fiber optic networks, offering low insertion loss and high return loss to maintain excellent signal quality over long distances. The precision ceramic alignment sleeves ensure accurate fiber connection, minimizing attenuation and signal degradation in critical telecom and enterprise backbone applications. Its blue housing provides easy identification in patch panels and faceplates, simplifying network management. The duplex design allows simultaneous bidirectional transmission, enhancing communication efficiency. Compatible with standard keystone mounts, it enables quick, tool-free installation and reliable performance. The adapter is ideal for data centers, FTTH deployments, and backbone cabling. Each pack contains 10 adapters, suitable for bulk installations requiring consistent quality and durability.