GEDORE vanadium steel 31CrV3, chrome-plated, With same size each end, Chrome-vanadium steel 31CrV3, chrome-plated, Satin non-glare finish, Carefully forged and professionally machined, Ring: cranked and 10° angled, with UD profile for gentle power transmission, from SW 1.3/8" 12-edge ring, Jaw: ground precisely to exact nominal size for optimum contact areas, Slim ribbed open end for added strength guarantees maximum torques, Overloading indicated by deformation, The offset ring ensures a better grip on deep-seated or inset nuts or bolts, Top-grade industrial quality for the hardest of continuous use