JET raised panel combination wrenches are made with industrial quality S.A.E. 6140 Chrome Vanadium steel (up to 1-1/4-Inch or 32mm sizes) All wrenches feature TORQUE DRIVE box ends for increased torque Wrench size stamped on head for easy identification Sets are supplied with industrial strength terylene pouches (* except 700201, 700125, 700128) All sets meet and ANSI specifications