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: 1986-98 Porsche 924S 1985.5-89 Porsche 944 1986-91 Porsche 944 Turbo 1989-91 Porsche 944 S2 1992-95 Porsche 968 1989-94 Porsche 911 C2/C4 (964) 1994-98 Porsche 911 (993) 1998-04 Porsche 911 (996) 1997-04 Boxster On airbag-equipped cars, this will no longer operation of the airbag and should only be used for racing. 996 and Boxster required a washer for the nut to properly tighten (not included.)