The silver body finish matches standard BNC hardware, and the chain feature allows tethering to the cable or panel so the cap stays with the jack. It is packed in bulk.
This cap is designed for use with BNC jacks — the standard bayonet-style interface found on coax bulkhead connectors, patch panels, and test equipment. It covers the female BNC port, keeping dust and debris out of the centre contact and dielectric. The chain tether prevents loss during service.
