For convertible cars, this 7-piece Convertible Top Roof Rail Kit is designed to provide a perfect seal and includes all right and left side top rail seals along with the windshield top header seal. The middle section measures 13-3/4" long, ensuring a precise fit. Crafted with full steel cores and threaded studs, this kit offers unmatched durability and strength. It is specifically engineered for 1961-1964 Buick Invicta, LeSabre, and Wildcat; Chevrolet Impala; Oldsmobile Dynamic 88, Jetstar 88, and Starfire; and Pontiac Bonneville and Catalina models. Please note that the 1961 model year may require minor modifications for installation. This kit guarantees better sealing than competitor brands and is designed to never leak, keeping your interior dry and protected. Unlike other brands, Metro parts are made without accelerants or cheap fillers, ensuring long-lasting performance without premature aging or failure. Backed by a 30-year warranty, this SuperSoft product ensures peace of mind and reliability for decades.