The Platinum Tech 7-pc SAE Flare Nut Wrench Set, No. PLT-99700, is ideal for use on hex nuts made of softer materials. Its flare nut design allows for a better grip without slipping and the opening in the head gives greater access to fittings used on tubing. The wrenches have a 15 degree offset head and are made from chrome vanadium steel for strength and durability. They also have a full polish chrome finish for corrosion resistance and meets or exceeds ANSI standards.