Heavy-duty construction: The S216 3/8' 24 to SO239 antenna adapter is built with materials to durability and long-lasting performance. Versatile compatibility: This adapter is designed to fit a wide range of antennas and radios with 3/8' 24 threads and SO239 connectors, making it a versatile accessory for any radio enthusiast. Easy installation: The adapter features a simple screw-on design that makes it easy to install and remove from your antenna or radio. Improved signal quality: By connecting your antenna to your radio with this adapter, you can improve the quality of your signal and enhance your overall radio performance. Compact and portable: The S216 adapter is compact and , making it easy to carry with you wherever you go. It's the perfect accessory for mobile radio setups and outdoor adventures. new and Thread: S216 3/8' -24 Scoket: SO239 For any 1/2inch hole Colour:silver+ parent white Material:Metal Package Contents: 1 x 3/8-24 to SO239 Heavy Duty Stud Antenna Mount Adaptor