DIN 3124, chrome vanadium, chrome-plated, polished. With traction profile.
12kt mm: 17.0 length: 38.0mm diameter: 24.6mm depth: 12.5mm PROFILE: BI-HEXAGONAL SIZE / SIZE: 17 MM DRIVE: 1/2 INCH LENGTH: 38.0MM FOR IMPACT GUNS: NO MAGNETIC: YES PIN TO RELEASE: NO INSULATED VDE: NO