This product is a lot of 175 ultra SMF SX 9/125um optical network cables, each with a length of 3 meters. These cables are made by Corning, a trusted brand in the industry, and are designed for single-mode fiber transmission. They feature SC connectors on both ends, making them compatible with a universal range of devices. The cables also come with a lifetime manufacturer warranty, ensuring long-lasting performance and reliability for your optical network needs. Made in China, these finer optic cables provide a high-quality connection for your networking requirements.