This screw connector is used to connect SMA antennas to the board. Description TYPE SMA is one kind of RF

Description Copper Spring Antenna is a spring or coil built-in antenna spot pen-hold which made of copper material. It works

Features 100% compatible with Hirose U.FL series Dimension:3.1mm*3mm Technical Parameters Impedance: 50Ω Application 1.WLAN 2.Notebook Computers 3.Remote Measuring Equipment 4.Bluetooth