Forged from high quality steel, internally bevelled for easy fitting to bolt heads. Close tolerance internal square for secure fit on the tool. Square socket drives to DIN 3120. Optimum grain orientation due to special forging process. Close tolerance width across flats. No rounding of bolt corners, nuts and bolt heads are protected. Hardened in an oil bath, stress-relieved and distortion-free for a precision fit. Smoothed finish. AS drive profile.
DIN 3124 Material
HPQ® high performance steel, non-flaking chrome-plated over nickel.