For 1939-1941 Chevrolet Truck cars, this side mount antenna pad is designed with precision to ensure a perfect fit. Measuring 1-7/16" in outer diameter and 1/2" in inner diameter, it features a thick side on the beaded pad for added durability and stability. Depending on the year, two pads are used per car for 1939-1940 models, while 1941 models require just one. Crafted from high-quality compounds, this pad offers excellent chemical and UV resistance, ensuring it withstands harsh conditions and lasts for years. Its sleek black finish complements the vehicle's design while providing a secure and snug fit for the antenna mount. Backed by Metro’s Platinum Warranty, this part is protected for 30 years, giving you peace of mind with your purchase.