DHT Electronics 2pcs RF coaxial coax adapter SMA male to UHF female SO-239 SO239 Package include: 2 x adapters Connector:It is a solid UHF connector with higher performance than the other version. Impedance :50 ohm;Temperature tolerance:300C 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.