Chrome vanadium, chrome plated, polished, American dimensions. With traction profile.
12kt.-mm: 9/16 Length: 38.0mm Diameter: 20.5mm Depth: 11.5mm PROFILE: BI-HEXAGONAL SIZE / SIZE: INCH 9/16 DRIVE: 1/2 INCH LENGTH: 38.0MM FOR IMPACT GUNS: NO MAGNETIC: YES PIN TO RELEASE: NO INSULATED VDE: NO