W5SWL Brand Premium Series N Female Chassis Connector 4 Hole Panel Mount RF Radio Connector - by W5SWL Brand N Female Chassis RF Radio Connector 4 Hole Panel Mount Teflon Insulator, Gold Plated RF Pin, Nickle Plated Body 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