Conform to: ASME B107.4. Made from chrome vanadium steel with a highly polished mirror finish. Made to American Federal Standards, giving higher torque therefore improved performance. 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 | 8 x 10, 9 x 11, 12 x 14, 13 x 15 and 16 x 17mm.