Powerbuilt 640185 SAE Flare Nut Wrench Set, 4-Piece Made to be the most reliable tools in the market today Tool solutions for most all situations Built to exceed tool standards Includes 3/8-Inch by 7/16-Inch, 1/2-Inch by 9/16-Inch, 5/8-Inch by 11/16-Inch, 3/4-Inch by 7/8-Inch wrenches For automotive line fittings and plumbing applications Heat-treated drop forged steel Meets or exceeds ANSI standards Lifetime warranty