Hex L‑key set Bondhus 10999 — 9-piece 1.5–10 mm with ball end

Bondhus 10999 — 9-piece L‑key set provides a range of metric hex keys from 1.5 mm to 10 mm in a compact organizer. Each L‑shaped key combines a short arm for direct torque and a long arm with a ball end to engage fasteners at an angle, making this set suitable for work on machines, bicycles, furniture and electronic assemblies that use metric hex fasteners.

Advantages

The set includes nine commonly used metric sizes in a durable holder that keeps tools organized and accessible. Ball end geometry on the long arm allows up to 25° of engagement for angled access in confined spaces while the short arm provides solid drive for higher torque applications. Bondhus tools are manufactured for consistent fit into hex sockets to reduce rounding and wear on fasteners. The compact design and clear size markings simplify storage and selection on job sites or in a workshop.

Suitable for

• Assembly and disassembly of household and office furniture
• Maintenance and repairs on bicycles and scooters
• Service work on machinery and light industrial equipment
• Electronics and IT equipment where metric hex fasteners are present

Key specifications

• Set composition: nine L‑shaped hex keys
• Sizes included: 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm
• Ball end on long arm for angled entry
• Short arm for direct torque application
• Material and finish: hardened steel with protective surface treatment for durability and wear resistance
• Storage: compact holder with individual size slots and markings

How to use

Select the hex key size that matches the fastener head and insert the appropriate arm into the socket. Use the short arm to apply higher torque when loosening or tightening, and use the long arm with the ball end when access is obstructed or an angled approach is required. Ensure the key seats fully in the fastener recess to minimize cam‑out and wear. After use, return the key to its marked slot in the holder to maintain organization and prevent loss.

Usage recommendations

For best results, choose the correct size to avoid rounding fastener heads, apply steady controlled force rather than sudden impacts, and store the set in a dry place to prevent corrosion. When working in tight spaces, use the ball end for up to 25° of angle engagement but switch to the short arm for final tightening to achieve proper torque.