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 Panel: 1960, 1961, 1962, 1963, 1964, 1965, 1966] - [Chevrolet C30 Pickup: 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970] - [Chevrolet G30 Van: 1971] - [Chevrolet P30 Series: 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967] - [Chevrolet P30 Van: 1968, 1969, 1970] - [Chevrolet Truck: 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959] - [GMC C35/C3500 Pickup: 1967, 1968, 1969, 1970] - [GMC G35/G3500 Van: 1971] - [GMC P35/P3500 Van: 1967, 1968, 1969, 1970] - [GMC PB3500 Van: 1966] - [GMC Truck: 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959]