L-shaped hex key set YATO YT-0509, metric, 10 pcs, key long arm 1.6/1.8 cm, short arm 8.1 cm

YATO YT-0509 is an L-shaped metric hex key set consisting of 10 precision-formed keys. Each key features the classic L-shape that provides a long arm for reach and leverage and a short arm for access in tighter spaces. The set is intended for driving metric hex fasteners in assembly, maintenance and repair tasks where reliable fit and compact tool geometry are required.

Advantages

The L-shaped design gives two working positions with different leverage and reach, enabling both torque and access to recessed fasteners. Keys are made to fit metric hex fasteners accurately, reducing rounding and wear on fastener heads. The compact short arm length allows use in confined or crowded work areas while the longer arm provides additional leverage when greater torque is needed. The set contains a range of sizes to cover common metric applications.

Suitable for

• Assembly of furniture and equipment with metric hex fasteners
• Routine maintenance and repairs in workshops and on-site
• Accessing recessed or hard-to-reach hex bolts
• Electronics and mechanical work requiring compact hand tools

Key specifications

• Number of pieces: 10
• Configuration: L-shaped (long arm and short arm)
• Long arm lengths included: 1.6 cm and 1.8 cm (for certain sizes)
• Short arm length: 8.1 cm
• Measurement system: metric

How to use

Select the hex key that matches the size of the metric hex fastener. Insert the short or long arm into the fastener head depending on required access and torque: use the short arm for better access in narrow spaces and the long arm for increased leverage. Apply steady force while keeping the key fully engaged in the fastener to avoid stripping. After use, store keys in their holder or toolbox to protect edges and maintain fit.

Usage recommendations

Use the long arm for loosening tight fasteners and the short arm for turning in restricted spaces. Avoid excessive force beyond the mechanical limits of the fastener or tool to prevent deformation. Keep keys clean and free of rust; if possible, apply light lubrication to threaded fasteners to ease operation.