DIN 3124, with release bolt f. Safety pin, chrome vanadium, chrome-plated, polished.
6 kt.-mm: 21.0 diameter: 31.0 mm length: 52.0 mm PROFILE: HEXAGONAL SIZE / SIZE: 21 MM DRIVE: 3/4 INCH LENGTH: 52.0MM FOR IMPACT GUNS: NO MAGNETIC: YES PIN TO RELEASE: YES INSULATED VDE: NO