For GM Fuel Line Flare, Brake Lines and Transmission 5/16 and 3/8”. For 45˚ Flare/Double Flare 3/16, 1/4, 5/16, 3/8 and 1/2”. For 1/4, 5/16 and 3/8”. Fit For the Following Models Also included in the plastic box is Mini Tube Cutter For 1/8" to 5/8" (3-16 mm) O.D. tubing.