S7MS-3623-MG Scott Drake Tri-Bar Horn Button. Tri-Bar Horn Button; This officially licensed Tri-Bar horn button is the perfect center piece for the CS500 steering wheel. It features a showquality chrome plated steel bezel topped with a vacuum metalized acrylic lens and a stamped aluminum Tri-bar emblem. This horn button is designed to work exclusively with the Corso Feroce CS500 steering wheels p/n S7MS-3600-A. So we have a chance to make it right - we want your repeat business!Check out the official Holley Performance.