10 Piece Fractional Flare Nut Crowfoot Wrench Set. Contains: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", and 1" flare nut crowfoot wrenches in 3/8" drive. Flare nut crowfoot wrenches are designed for use on soft fittings such as brass or aluminum. Also useful for fasteners in hard to reach places. SuperKrome finish provides maximum corrosion resistance. Made in U.S.A. Lifetime Warranty.