The FC-W2-XR79-HRF is a $2 SC/APC adapter from Fraen Corporation. It is designed to mate with standard SM MM85 style connectors. It allows singular, continuous multimode and single mode connectors to be mated to each other. Its featuring a standard 1.25mm ferrule, a keyed, latching housing and a snap-in mechanism designed to resist dust ingress and debris. Ideal for telecom, data centers, and other high-density cabling applications, the FC-W2-XR79-HRF helps reduce installation time and improves reliability.