This is a BMW M Technik Sport Steering Wheel for a BMW E28 5 Series, E34 5 Series, E24 6 Series, or E32 7 Series without an airbag. This is a pretty aggressive looking steering wheel by BMW. An apparent predecessor to the popular contemporary M Technik wheels of today. Purchase includes a complete wheel rim and roundel. There is no airbag with this wheel. Its diameter is 385MM.