Hex key Proline 48566 — metric 2.5 mm, 1 piece

Proline 48566 is a single metric hex key with a 2.5 mm tip designed for tightening and loosening hex (Allen) fasteners. The tool has a quench‑hardened and tempered steel body with a polished chrome finish, offering a compact hand tool suited to precision work in confined spaces. Its one‑piece L‑shaped form provides straightforward access to fasteners while allowing for controlled torque and reliable fit with standard hex sockets.

Advantages

The hardened and tempered steel construction improves durability and resists deformation under typical torque loads. The polished chrome finish helps protect against corrosion and simplifies cleaning. Its 2.5 mm nominal tip size matches standard metric hex fasteners for a secure engagement, and the single-piece design eliminates joints that could weaken during use. The compact size makes it easy to carry and store.

Suitable for

• Electronics assembly and repair where small metric hex fasteners are common
• Bicycle maintenance for components using 2.5 mm hex bolts
• Furniture assembly and adjustment in tight spaces
• General household and workshop maintenance tasks requiring precise small‑scale torque

Key specifications

• Tip size: 2.5 mm (metric)
• Material: quenched and tempered steel
• Surface finish: polished chrome
• Design: one‑piece L‑shaped hex key
• Quantity: 1 piece

How to use

Insert the 2.5 mm tip fully into the hex socket of the fastener to ensure maximum contact and reduce the risk of rounding. Use the long arm for reach and the short arm to apply higher torque as required. Apply steady, controlled force and avoid sudden impact loads to preserve the tool's tip profile. After use, wipe the chrome finish clean and store the key in a dry place to maintain its condition.

Usage recommendations

Use the hex key only with fasteners that match the 2.5 mm nominal size to avoid damage to the fastener or tool. For tasks requiring significantly higher torque, use an appropriately sized tool rather than imposing excessive force on this small key. Regularly inspect the tip for rounding and replace the tool when wear affects fit.