Review on Crescent CFNWS0 Grey 3-Piece SAE Flare Nut Wrench Set by Charlie Wilson

Make sure you really need the standard set before you assume you need it. I've tried all of my metric wrenches, including a set of flared nuts, and found them to be too loose. I pulled out my standard open end wrenches and the 9/16 fit perfectly. The problem was that I needed a flare wrench to loosen the master cylinder flare nuts without stripping them off. When they arrived I tried very hard and the flare nuts came loose without rounding them off. I've worked with cars for over 20 years and have seen people use the wrong size wrenches or sockets and end up tearing off parts.