Chrome vanadium sleeves, chrome-plated, special steel blades, gray steel, for socket head screws.
Inch SW: 3/8 Length: 52.0mm Diameter: 23.0mm PROFILE: ALLEN SIZE / SIZE: INCH 3/8 DRIVE: 1/2 INCH LENGTH: 52.0MM FOR IMPACT GUNS: NO MAGNETIC: YES PIN TO RELEASE: NO INSULATED VDE: NO