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. [Chevrolet C20 Suburban: 1981, 1982, 1983, 1984, 1985, 1986] - [Chevrolet C20: 1981, 1982, 1983, 1984, 1985, 1986] - [Chevrolet G30: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996] - [Chevrolet K20 Suburban: 1981, 1982, 1983, 1984, 1985, 1986] - [Chevrolet K20: 1981, 1982, 1983, 1984, 1985, 1986] - [Chevrolet P20: 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989] - [Chevrolet R20 Suburban: 1987, 1988] - [Chevrolet R20: 1987, 1988] - [Chevrolet R2500 Suburban: 1989, 1990, 1991] - [Chevrolet V20 Suburban: 1987, 1988] - [Chevrolet V20: 1987] - [Chevrolet V2500 Suburban: 1989, 1990, 1991] - [GMC C2500 Suburban: 1981, 1982, 1983, 1984, 1985, 1986] - [GMC C2500: 1981, 1982, 1983, 1984, 1985, 1986] - [GMC G3500: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996] - [GMC K2500 Suburban: 1981, 1982, 1983, 1984, 1985, 1986] - [GMC K2500: 1981, 1982, 1983, 1984, 1985, 1986] - [GMC P2500: 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989] - [GMC R2500 Suburban: 1987, 1988, 1989, 1990, 1991] - [GMC R2500: 1987, 1988] - [GMC V2500 Suburban: 1987, 1988, 1989, 1990, 1991] - [GMC V2500: 1987]