Hex Key Proline 12 mm — Proline Tools 48494, 1 pc

Proline Tools 48494 is a single 12 mm metric hex key designed for driving hexagonal socket fasteners. Made from quenched and tempered steel with a polished chromium finish, this 12 mm hex key offers a precise fit for bolts and screws with hexagonal sockets. Its compact, single-piece design makes it convenient to carry and store, while the hardened construction provides resistance to wear and twisting under torque in workshop, maintenance and general repair tasks.

Advantages

The hardened, quenched and tempered steel construction increases durability and reduces the risk of bending during use. A polished chromium finish improves corrosion resistance and facilitates cleaning. The single-size format provides a reliable, exact fit for 12 mm hex socket fasteners, minimising rounding and slippage. Its compact form factor is easy to keep in a toolbox or service bag for quick access.

Suitable for

• Assembly and disassembly of furniture and equipment with 12 mm hex sockets
• Mechanical maintenance and repair in workshops and garages
• Industrial applications requiring a single, robust 12 mm hex key
• Home DIY projects where a precise 12 mm hex tool is needed

Key specifications

• Size: 12 mm hex key (metric)
• Material treatment: quenched and tempered steel
• Finish: polished chromium
• Format: single-piece, compact hex key
• Intended fastener type: hexagonal socket bolts and screws

How to use

Insert the 12 mm hex key into the hexagonal socket of the fastener ensuring full engagement of the key into the socket to avoid cam-out. Apply steady torque in the required direction to tighten or loosen the fastener. For higher torque requirements, use the longer arm (if applicable) or apply force from the handle end while maintaining alignment to prevent stripping. After use, wipe the polished chromium surface clean and store the tool in a dry location.

Usage recommendations

Use the hex key only in matching 12 mm hex sockets to avoid damage to the tool and fasteners. Avoid excessive impact or bending forces and keep the tool dry and free of corrosive chemicals to preserve the polished chromium finish and the hardened steel properties.