This adapter will allow you to mount your 6-bolt MOMO or other 6x70mm pattern steering wheel to the steering column in many Porsche models. The install is bolt-on without any welding using the 40-spline steering column on the car. The collapsable structure of the hub is designed to absorb an impact. Kit includes hub, hub cover, 6 countersunk screws for mounting wheel to hub, allen key, grounding plate and grounding wire. Fits the following Porsche models: 1974-88 Porsche 911 (including Carrera, 930, Turbo, etc) 1965-70 Porsche 912 (US market only) 1978-95 Porsche 928