Conform to ASME B107.4. Made from high quality chrome vanadium steel. Satin finish body with highly polished heads. Offset ends. The wrench will fit over the pipe to give a positive location on the nut. Can be used on hydraulic pipes, brake pipes etc. | | Contents | 1/4″ x 5/16″, 3/8″ x 7/16″, 1/2″ x 9/16″, 5/8″ x 11/16″ and 3/4″ x 7/8″.