Campy Clone wheels are not created equally. Among the various large diameter Campy clone wheels, the size of the wheels have been increased in one of two ways. One method has been to increase all the dimensions of the wheel proportionally … so as the diameter of the wheel increases, so do the sizes of the windows and slots.
The other method, used by Roin (who makes the wheels for Mr. Fiat) has been to increase the width of the step and the width of the background only, thus leaving the sizes of the windows and slots the same dimensions as the OEM (15 inch)wheels.
One method may look better to you than the other, so this is something to consider when you're making a choice in which Campy Clone wheels to purchase.