QMseller UHF Female SO239 4-Hole Panel Chassis Mount Flange Panel Mount Adapter Solder Cup RF Coaxial Coax Connector Adapter for PL259 Male Plug Pack of 4 Type:Antenna Adapter UHF Female SO239 connector Surface treatment: Nickel plated Impedance: 50 ohm, Low-loss Package included: 4 pieces UHF Female Panel Connector Come in handy for many projects which involves UHF Type connector. Worked great for a 1/4 wavelength vertical with four radials. Application for Antennas, Wireless LAN Devices , Coaxial cable, Wi-Fi, Radios, External Antenna, Broadcast, Telecom, CCTV, Microwave Applications, Digital Communication System and so on, >1000 Times Mating Life Time. Used coax cable with the PL259 connecter when makeing a antenna with it. Please confirm what type of connector your device is before purchasing. We provide 12 months warranty and return service after the original purchase date. If there are any manufacturing defects in this product, please do not hesitate to contact our customer service team. If you have any questions about the operation or other aspects of the product, please feel free to contact our customer service team. We will answer you as soon as possible.