This 17-piece metric hexagon key set is an L‑shaped Allen key collection designed for driving internal hex (socket) fasteners. It is primarily used to tighten and loosen hex socket screws and bolts where a compact, hand‑held tool is required for assembly, maintenance or repair work, offering both a short arm for torque and a long arm for reach.

Each key is manufactured from chrome vanadium steel (Cr‑V) that has been heat treated and tempered to provide high torsional strength and wear resistance. The keys are finished with a satin chrome plating to give corrosion protection and to ease cleaning after use. The set is produced to metric dimensional standards compatible with common DIN/ISO hexagon socket specifications, ensuring interchangeability with standard metric socket head cap screws and set screws. Head type is the classic L‑shape with a short and long leg, and drive type is internal hex; several sizes include a chamfered or ball end on the long arm to allow angled engagement where access is restricted.

Typical applications include automotive and motorcycle maintenance, machinery assembly, plant and site maintenance, furniture and joinery installation, bicycle repair, and general engineering work. The set is suitable for workshop use, service engineers and DIYers who require a comprehensive metric range for routine servicing and assembly tasks. Industries that commonly use this toolset include manufacturing, facilities maintenance, automotive servicing, and electrical and mechanical engineering.

Key benefits of this set are its corrosion resistance from the satin chrome finish, the strength and durability delivered by the Cr‑V material and heat treatment, and its compatibility with standard metric hex fasteners for dependable fit and reduced rounding of socket heads. The combination of short arm torque and long arm reach plus the option of a ball end on selected sizes improves access in tight or awkward locations and reduces the need for multiple tools.

Duchy Fasteners stocks this 17pc metric hex key set alongside individual metric keys and alternative pack sizes, covering popular sizes across the small to medium metric range to suit workshop and on‑site requirements. Packs are available while stocks last; please contact Duchy Fasteners for current size availability and pack options.