These wheel lug studs are made of carbon steel and tested to demanding automotive industry standards to ensure strength, longevity and safety. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Buick Gran Sport: 1967] - [Buick GS 400: 1968, 1969] - [Buick GS 455: 1970, 1971, 1972] - [Buick GS: 1970, 1971, 1972] - [Buick Skylark: 1970, 1971, 1972] - [Buick Sportwagon: 1967, 1968, 1969, 1970, 1971, 1972] - [Oldsmobile 442: 1970, 1971] - [Oldsmobile Cutlass Supreme: 1971, 1972] - [Oldsmobile Cutlass: 1970, 1971, 1972] - [Oldsmobile F85: 1970, 1971, 1972] - [Oldsmobile Vista Cruiser: 1970, 1971, 1972] - [Pontiac Firebird: 1969] - [Pontiac Grand Prix: 1971, 1972] - [Pontiac GTO: 1969, 1971] - [Pontiac LeMans: 1969, 1971, 1972] - [Pontiac Tempest: 1969]