56-62 Hubcap Spinner
The inside diameter of the rear of the cap measures 3 1/8 inch. This hubcap spinner attaches with 4 screws. The Center to Center of the screw holes is 2 5/8 inch. The OD on the fingers that pressure fit/snap into the wheel is 3 1/8 inch. It has a 2 1/2 inch overall height.