Suicide Knob Steering Wheel Spinner. Polished Aluminum Here is a nice accessory for your favorite ride. It measures about 2" wide at the top and is about 2" tall not counting the plate. Super smooth, must be a bearing in there. Better save an old shoe tongue to protect the steering wheel paint. It will fit on a steering wheel up to 1 1/2" thick. The listing is for the assembly as shown.