W5SWL Brand Premium Series Coax Adapter N Female to TNC (RP) or"Reverse Polarity"Female - by W5SWL Brand N Female to TNC Reverse Polarity Female Connector Connects N Male and TNC RP Male together Teflon Insulator, Gold Plated RF Pin, Nickle Plated Body IMPORTANT NOTE - RP or "Reverse Polarity" connectors do NOT fit standard connectors. A RP male end will have a female pin, and a RP female end will have a male pin. They do NOT fit standard connectors. by W5SWL Brand is Trademarked - Sold only by Dave's Hobby Shop and NO others. Premium Communications Connectors - not for Cable TV