DIN 3124, long form, chrome vanadium, chrome-plated, polished. With traction profile.
Hex mm: 13.0 Length: 85.0 mm Diameter: 18.8 mm Depth: 12.0 mm PROFILE: HEXAGONAL SIZE / SIZE: 13 MM DRIVE: 1/2 INCH LENGTH: 85.0MM FOR IMPACT GUNS: NO MAGNETIC: YES PIN TO RELEASE: NO INSULATED VDE: NO