In a nutshell
The right choise for
With the Wiha 334040350 hex key, you can effortlessly reach deeply recessed socket head screws in machinery housings and tight spaces. Featuring an extra-long 350 mm blade and a total length of 382 mm, it easily bridges distances where standard L-keys fall short. The ergonomic T-handle delivers powerful leverage and high torque transfer with minimal hand strain, making it ideal for loosening tight 4 mm fasteners or handling repetitive assembly tasks. Crafted from through-hardened chrome-vanadium steel with a bright nickel-plated finish, this tool offers lasting wear and corrosion resistance so you can work with complete control and confidence.