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) - [Ford Bronco II: 1984, 1985, 1986, 1987, 1988, 1989, 1990] - [Ford Bronco: 1985, 1987, 1988, 1989] - [Ford Explorer: 1991, 1992, 1993, 1994] - [Ford F-150: 1987, 1988] - [Ford Ranger: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997] - [Mazda B2300: 1995, 1996] - [Mazda B3000: 1994, 1995, 1996, 1997] - [Mazda B4000: 1994, 1995, 1996, 1997] - [Mazda Navajo: 1991, 1992, 1993, 1994]