The CommScope ADC 6SADANSM-SC02 SC/APC Simplex Fiber Optic Adapter Lot of 21 is a set of high-quality adapters designed for networking cables and connectors. These black adapters are manufactured in the United States and come with a 3-month manufacturer warranty. With a 1:1 connection split/duplication, these adapters are compatible with the ADC6SADANS model and feature SC and SC/APC connectors for easy installation and use. This lot of 21 new adapters is a reliable and efficient solution for connecting and adapting fiber optic cables in networking setups.