L-shaped hex key YATO YT-05439 — Metric, 1 pc, long arm 15 cm, short arm 3.4 cm

YATO YT-05439 is an L-shaped metric hex key supplied as a single piece. The tool combines a 15 cm long arm and a 3.4 cm short arm to provide variable reach and torque for tightening or loosening metric hex fasteners. Its L-shape allows access in narrow or recessed spaces while the long arm gives additional leverage for higher torque applications. The hex key is designed for routine assembly, maintenance and repair tasks on machinery, furniture, bicycles and automotive components that use metric hex bolts.

Advantages

The L-shaped design provides two working lengths in one tool, allowing quick switching between reach and torque. The long 15 cm arm increases leverage for stubborn fasteners, while the 3.4 cm short arm enables work in confined spaces. Built to standard metric dimensions, the hex key fits hex sockets precisely to reduce rounding and slipping. Supplied as a single-piece tool, it is compact, easy to store and simple to use without additional components.

Suitable for

• Assembly and disassembly of furniture with metric hex bolts
• Routine maintenance of bicycles and small machinery
• Automotive repairs involving metric hex fasteners in tight spaces
• Workshop and household repair tasks where controlled torque is required

Key specifications

• Type: L-shaped hex key (Allen key)
• Measurement system: Metric
• Quantity: 1 piece
• Long arm length: 15 cm
• Short arm length: 3.4 cm
• Shape: L-shaped with long and short arm

How to use

Insert the appropriate hex end into the hexagonal recess of the fastener, using the short arm for access in tight spaces and the long arm for increased leverage. Apply steady force while keeping the key aligned with the fastener to minimize cam-out and rounding. For higher torque, use the long arm as a handle and the short arm engaged in the fastener; for controlled torque in limited clearance, reverse the key so the short arm is used as the handle. Inspect the contact between tool and fastener before turning to ensure a secure fit.

Usage recommendations

Use the hex key only with matching metric fasteners and avoid applying impact or excessive force that exceeds the tool’s design limits. Keep the key clean and free from burrs; replace if the tip shows rounding. Store in a dry place to prevent corrosion and maintain accurate fit with fasteners.