DIN 3124, long form, chrome vanadium, chrome-plated, polished. With traction profile.
12kt.-mm: 30.0 Length: 85.0mm Bore: 40.1mm Depth: 30.0mm PROFILE: BI-HEXAGONAL SIZE / SIZE: 30 MM DRIVE: 1/2 INCH LENGTH: 85.0MM FOR IMPACT GUNS: NO MAGNETIC: YES PIN TO RELEASE: NO INSULATED VDE: NO