DIN 7422, short version, chrome vanadium, chrome-plated, burnished tips, for hexagon head screws.
6 kt.-mm: 8.0 Length: 38.0 mm Diameter: 23.0 mm PROFILE: ALLEN SIZE / SIZE: 8 MM DRIVE: 1/2 INCH LENGTH: 38.0MM FOR IMPACT GUNS: NO MAGNETIC: YES PIN TO RELEASE: NO INSULATED VDE: NO