W5SWL Brand Premium Series Coax Adapter BNC Female to UHF PL-259 Male - by W5SWL Brand BNC Female to UHF PL-259 Male Delrin Insulator, Nickle Body, Gold Plated RF Pin Used for connecting cables with a BNC male connector to a device using a SO-239 jack Dave's Hobby Shop Premium Connector Series - by W5SWL by W5SWL Brand is Trademarked - Sold only by Dave's Hobby Shop and NO others. Premium Communications Connectors - not for Cable TV