DHT Electronics N Male to BNC Female Adapter Antenna Converter Connector For Radio Walkie Talkie Package include:1 x N male to BNC female,picture shows 2 for different side view Connector Material:Pure Copper with Great connectivity.(Not Alloy) Impedance :50 ohm Commonly Used in RF Applications, Antennas, Wireless LAN Devices , Coaxial cable, Wi-Fi Radios External Antenna, &gt;1000 Times Mating Life Time. DHT Electronics Brand is a Registered Trademark of DHT LLC.Only authorized seller of DHT Electronics can sell under DHT Electronics listings.