Polished billet aluminium horn button designed for large centre applications. Fits 9 bolt steering wheel hubs used on many aftermarket steering wheels. Styled to suit Cal Custom billet profile half wrap wheels and similar designs. This polished aluminium steering wheel centre horn button is designed for 9 bolt steering wheel hub adaptors and large centre steering wheel applications. It features a billet construction with a clean polished finish, making it suitable for hot rod, custom, and classic builds. The button surround covers the boss/hub bolts on your steering wheel. While specifically designed to suit Cal Custom billet profile half wrap steering wheels, this horn button will also suit other aftermarket steering wheels such as Billet Specialties, using a 9 bolt hub pattern. Measurement checks are recommended to confirm correct fitment before installation. Specifications Product type: Steering wheel centre horn button Material: Billet aluminium Finish: Polished Hub compatibility: 9 bolt Outside diameter: 112 mm Inner step diameter: 82 mm