Package Includes: 9 Pcs F type to sma adapters (3 Pcs F male to sma, 3 Pcs F female to sma male, 3 Pcs F female to sma female) Commonly Used in RF Applications, Antennas, Wireless LAN Devices , Coaxial cable, Wi-Fi Radios External Antenna, >1000 Times Mating Life Time. Impedance :50 ohm;Temperature tolerance:300°C