DHT Electronics 2PCS RF coaxial coax adapter RP-SMA male to RP-TNC female Package include: 2 x adapters application for Antennas, Wireless LAN Devices , Coaxial cable, Wi-Fi Radios External Antenna and so on Impedance :50 ohm Connector Material:Pure brass with Great connectivity.(Not Alloy) DHT Electronics Brand is a Registered Trademark of DHT LLC.Only authorized seller of DHT Electronics can sell under DHT Electronics listings.