GM NOS jack sleeves for attaching the lug wrench to the jack post when installed in trunk. Notice they have the correct ribs unlike reproductions. Two included required per jack as pictured, box is not included since I purchased these in bulk. 

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1964 1965 1966 1967 1968 1979 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981

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