Get your semi truck Ready for the Road Ahead with a reliable CB for both daily and emergency use, with the Accessories Unlimited 3" Medium Duty Stainless Steel Spring. By tightly securing your antenna to its mount, this easy-to-install replacement spring is the ideal option to keep your antenna in place during powerful winds or weather conditions. Manufactured with quality components to provide an extended range and clear connection to countless AM/FM stations, channels, and frequencies. FleetPride is your First Click in Heavy Duty .