SPA Design F-1 Splined Quick-Release Steering Wheel Hubs
Superb quality, virtually no play, used by many F1 and F3 constructors! Aluminum construction except for the steel core which gets welded and/or pinned to the steering shaft. Special 20mm asymmetric spline allows mating in only one orientation so you will never end up with a cock-eyed steering wheel. All of the SPA quick releases are FIA and SFI approved.