Features and Benefits: Large Size Stamp on Open End; Offset Box End for Better Access; Bright, Full Polish Chrome Finish; Made of High Carbon Content Premium Alloy Steel; Surface Drive PlusT on Open End: Stronger Grip, Reduces Fastener Rounding, Up to 25% More Torque; Long pattern combination wrenches with enhanced open end design with SurfX Drive} Technology that prevents fastener rounding. Size stamped on both sides and on head for ease in identification.