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 ompatible with the following vehicles. Before purchasing, enter your vehicle specifications in the Amazon Garage to confirm correct fitment. [Buick LeSabre: 1977, 1978, 1979, 1980] - [Buick Riviera: 1977, 1978] - [Cadillac Brougham: 1991, 1992] - [Cadillac DeVille: 1976, 1977, 1978, 1979, 1980] - [Cadillac Eldorado: 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978] - [Cadillac Fleetwood: 1977, 1978, 1979, 1980, 1991, 1992, 1993, 1994, 1995, 1996] - [Cadillac Seville: 1977, 1978, 1979] - [Jaguar Vanden Plas: 1998, 1999, 2000, 2001, 2002, 2003, 2004] - [Jaguar XJ8: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009] - [Jaguar XJR: 1998, 1999, 2000, 2001, 2002, 2003] - [Jaguar XK8: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006] - [Jaguar XKR: 2000, 2001, 2002, 2003, 2004, 2005, 2006] - [Oldsmobile Toronado: 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978]