These wheel lug studs are made of carbon steel and tested to demanding automotive industry standards to ensure strength, longevity and safety. Vehicle model years this part fits (be sure to check your vehicle trim using the Amazon garage) - [Dodge Ramcharger: 1978, 1979, 1980, 1981, 1982, 1983, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993] - [Dodge W100: 1986, 1987, 1988, 1989] - [Dodge W150: 1978, 1979, 1980, 1981, 1982, 1983, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993] - [Dodge W250: 1981, 1982, 1983, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993] - [Ford F-250: 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989] - [Ford F-350: 1984, 1985] - [Plymouth Trailduster: 1978, 1979, 1980, 1981]