Fuhr Allen Key Long Series 4.0mm – Hardened Steel

The Fuhr Allen Key Long Series 4.0mm is a hardened steel hexagon key designed for accessing recessed fasteners in confined or deep-set spaces. Manufactured from special tempered steel with a black finish, it delivers superior durability and corrosion resistance for demanding electrical and mechanical applications. Ideal for electricians, engineers, and maintenance technicians who require reliable hex key access in industrial and trade environments.