Hex key (Allen wrench) 10 mm GEKO model 400

Hex key (Allen wrench) 10 mm GEKO model 400 is a single-size L-shaped hand tool designed for driving and loosening M10 hex-socket fasteners. Manufactured from hardened steel, this 10 mm hex key transfers manual torque reliably for assembly, maintenance and repair tasks. Its compact L-profile suits confined spaces while providing leverage for common workshop and household jobs on machinery, furniture and bicycles.

Advantages

The solid steel construction ensures robust torque transmission and resistance to wear during repeated use. The L-shaped design offers a short and a long arm for access and leverage options without additional attachments. Its single-size format makes it easy to store, carry in a toolbox or keep with project-specific fasteners. The compact dimensions and simple geometry minimise the risk of rounding fastener sockets when used correctly.

Suitable for

• Driving and loosening M10 hex-socket bolts and screws
• Assembly and disassembly of machinery components
• Furniture assembly and adjustment
• Bicycle maintenance and repair where 10 mm hex fittings are used
• General workshop and household fastening tasks

Key specifications

• Tool type: L-shaped hex key (Allen wrench)
• Size: 10 mm across flats
• Material: hardened steel
• Finish: untreated or standard machined steel surface
• Design: single-size, fixed-angle (L-profile) for manual use

How to use

Insert the short or long arm of the 10 mm hex key into the hex socket of the fastener, choosing the arm that gives the appropriate clearance and leverage. Turn clockwise to tighten or counterclockwise to loosen, keeping the tool aligned with the fastener axis to avoid cam-out or rounding. For higher torque, use the long arm as the lever and grip close to the bend for control. Inspect the hex key and fastener before use and avoid applying impact forces or using the tool as a pry bar.

Usage recommendations

Use the 10 mm GEKO hex key with matching clean hex sockets and avoid excessive force to prevent fastener damage. Store in a dry toolbox to limit corrosion and periodically check the tool tip for wear; replace if the edges become rounded.