Nardi Steering Wheel - Deep Corn - 350mm (13.78 inches) - Black Leather with Red Stitching - Part # 6069.35.2093. Note: The Classic Horn Button is designed to work with most Nardi hub adapters and NRG quick releases; however, we advise getting the Black Horn Button model (Type A Horn Button) for use with most other applications (some Nardi hub adapters, MOMO to Nardi conversion adapters, short spacers, etc)