Black Box Pre-Polished Fiber Optic Connector, 50-Micron Multimode, LC, Black, 6-PackExperience faster fiber terminations with the Black Box Pre Polished LC Fiber Optic Connector. Designed for 50 micron multimode fiber, this reliable LC connector arrives in a convenient 6 pack, making it ideal for bulk deployments, field upgrades, or multi port installations. The key advantage is its epoxy free, field ready design: you can achieve solid, low loss connections quickly, with the option to reseat the fiber if adjustments are needed.