Fitment: With reliable performance, steering wheel horn button fits for All 6 Bolts Racing Steering Wheel, for MOMO/OMP/Nardi/Sparco/VERTEX. The External Horn Button Kits are mounted between the hub adpater and steering wheel. Premium Acrylic + Carbon Fiber Material: External horn button is made of high quality acrylic and carbon fiber material, solid and durable, external horn buttons give your steering wheel a crowning Contact. High level of accuracy and sensitivity, enhance safety of your vehicle. How to Install: External horn button kits are mounted between the hub adapter and the steering wheel. Available in single or dual button versions, which can enhance your steering wheel's comfort and function. Good Replacement : standard, direct replacement for the old or broken one. Built to meet standard specification, strictly follow factory quality control. Condition: 100% brand new Commodity type: steering wheel horn button Type: Double button Colour:Carbon fiber color Material:Acrylic + Carbon Fiber Package Contents: 1 x Horn Button Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.