DHT Electronics 2pcs RF coaxial coax adapter SMA female to SMA female bulkhead Package include:2 x adapters high value version 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.