The formula quick release boss from Racetech has an inner spline design that is precision machined for accurate alignment allowing for easy removal of the steering wheel making getting in and out of the race car much easier. Designed to be welded onto a steering column with a choice of three diameters to choose from.Made from aircraft quality aluminium3 bolt hole wheel mounting with a choice of hole diameters or a plain undrilled option for a custom fittingA choice of diameters to suit different size steering columnsThere is a choice of different shaft diameters, steering wheel hole diameters and there is also two different collar colours to choose from. The black collar is mainly used for national level motorsport, whereas the gold collar version conforms with FIA regulations.