TEKTON 2640 Flare Nut Wrench Set, Inch, 3/8-Inch - 11/16-Inch, 3-Piece Drop forged, heat treated carbon steel construction Corrosion-resistant chrome plated finish 15 offset ends Use for connection fittings on fuel, brake, and air conditioning lines 3/8" x 7/16", 1/2" x 9/16", 5/8" x 11/16"