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 C30: 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [Chevrolet C35: 1995] - [Chevrolet C3500: 1994, 1995] - [Chevrolet G30: 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996] - [Chevrolet K30: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [Chevrolet P30: 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999] - [Chevrolet R30: 1987, 1988] - [Chevrolet R3500: 1989, 1990, 1991] - [Chevrolet V30: 1987, 1988] - [GMC C35: 1975, 1976, 1977, 1978] - [GMC C3500: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1994, 1995] - [GMC G35: 1975, 1976, 1977, 1978] - [GMC G3500: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996] - [GMC K3500: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [GMC P35: 1977, 1978] - [GMC P3500: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999] - [GMC R3500: 1987, 1988, 1989, 1990, 1991] - [GMC V3500: 1987, 1988]