Works on transmission oil cooler lines on: 1987-newer Olds Toronado, Buick Riviera and Reatta, Cadillac Eldorado, Seville and Concours; and 1989-newer GM 1/2", 3/4", and 1-ton pickups 5/16 lines only not for 3/8" found on 3/4 or 1 ton pick-up
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Works on transmission oil cooler lines on: 1987-newer Olds Toronado, Buick Riviera and Reatta, Cadillac Eldorado, Seville and Concours; and 1989-newer GM 1/2", 3/4", and 1-ton pickups
5/16 lines only not for 3/8" found on 3/4 or 1 ton pick-up