BUICK (1977 - 1993) CADILLAC (1990 - 1993) CHEVROLET (1967 - 1995) GMC (1970 - 1995) OLDSMOBILE (1977 - 1994) PONTIAC (1968 - 1993) Face Angle (Deg): 45 DegreeHead Diameter (In): 1.940 InchHead Diameter (mm): 49.276mmMaterial: Chrome StemOverall Length (In): 4.880 InchOverall Length (mm): 123.952mmStem Diameter (In): 0.3414 InchStem Diameter (mm): 8.672mm