I call them rinky-dinks. Center hubcaps for 4-wheel drive pick-up trucks, they say GMC but of course they fit Chevy's too. They fit any 16/16.5 factory 10 lug steel wheek, the fronts have a hole for axel shaft lock-outs. They will fit your Fords & Dodge too but don't put them on your Ford, you'll never hear the end of GMC on a Ford! Patrick