Single hexagonal screwdriver 405 10.0 Wiha 03854.

Material:
Ductile-hard chrome-vanadium-molybdenum steel, fully hardened, chemically blackened.

Application:
For protecting the thread when removing damaged or broken left- or right-handed screws, especially twisted hex screws. Simply insert the screwdriver, firmly attach the socket wrench and unscrew without jamming.