DHT Electronics 2pcs SMA Adapter RP-SMA Plug to RP-SMA Jack Right Angle Adapter Package Content : 2 x SMA Adapters Connector Material:Pure brass with Great connectivity.(Not Alloy) Impedance:50ohm Both ends are reverse polarity.Thread inside with hole center,thread outside with pin center DHT Electronics Brand is a Registered Trademark of DHT LLC.Only authorized seller of DHT Electronics can sell under DHT Electronics listings.