This sturdy metal dust cap protects your expensive Type N female coaxial interface when not connected to a mated interface. This cap features a metal retaining chain so that the caps can be securely attached to adjacent surface to prevent loss. Features Retaining chain feature prevents loss Gasket provides moisture resistance Metal construction is long lasting and durable Protection of N-type female coaxial interfaces Application Cable management LAN infrastructure MDF/IDF applications Network consolidation Warning WARNING: This product can expose you to chemicals including phthalates, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov