The Chrome Billet Aluminum Steering Wheel 4 5/8 Horn Button 9 Hole Universal S83001C is a vintage performance part made of lightweight aluminum. It includes an installation kit and a chrome horn button with a 9 bolt pattern, suitable for universal fitment on steering wheels. The outer diameter is 4 5/8 inches, making it compatible with various vehicles. This electric horn button adds a stylish and functional touch to the interior of a car or truck, enhancing the overall driving experience.