DIN 911, chrome vanadium, bright nickel-plated, for hexagonal screws. Short.
SW: 4.0mm Length: 74.0mm PROFILE: ALLEN SIZE / SIZE: 4.0 MM BLADE LENGTH: 29 MM TOTAL LENGTH: 74MM HANDLE SHAPE: OFFSET WRENCH KEY ADAPTER: NO INTEGRATED SQUARE: NO TO HIT: NO ROTATING CAP: NO INSULATED VDE: NO CURRENT VOLTAGE DETECTOR: NO MAGNETIC: YES FLEXIBLE: YES