Robust Construction: The S216 3/8' 24 to SO239 antenna adapter is built with high-quality materials for 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 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 lightweight, making it easy to take with you wherever you go. It's the perfect accessory for mobile radio setups and outdoor adventures. Thread: S216 3/8' -24 Socket: SO239 For all 1/2 inch holes Color: silver+transparent white Material: Metal Package Contents: 1 x 3/8-24 to SO239 Heavy Duty Stud Antenna Mount Adapter