curtalcorn

SS center caps - can someone confirm if they use a steel retainer spring like highlighted on the gmt900 Denali cap below? Bought a set of GM wheels and 3 caps, but the caps don't seem secure. Hit google and eBay to see if I could find an answer, but all images show them without a retainer/snap ring/whatever you want to call it. If they do use a clip spring... Does anyone have a part number or proper name for the thing?