BNC Male to UHF PL259 Plug Straight RF Coaxial Adapter Connector for Wifi Antenna. This adapter converts a BNC male connector to a UHF PL259 plug, allowing for straight connection of RF coaxial cables. It is commonly used in communication equipment, wifi antennas, and other applications requiring a coaxial connection. The adapter is nickel-plated for durability and has a free hanging mounting type.