Hex key with ball end 5.0 mm, Dedra model 06F077, CRV steel, long

Long hex key (Allen key) 5.0 mm with a ball end from Dedra is a single-piece hand tool designed for accessing and turning hexagonal fasteners in confined or angled spaces. Constructed from CRV (chromium-vanadium) steel, the tool provides a balance of strength and toughness suitable for repeated use. The ball end permits insertion at an angle, while the extended length of the long arm gives additional reach and mechanical leverage for fastening and loosening operations.

Advantages

The CRV steel construction ensures resistance to wear and good torque transfer without excessive flex. The ball-end geometry enables up to approximately 25–30° of angular engagement, making it possible to operate fasteners that are not perfectly aligned with the tool axis. The long arm increases reach into deep or recessed components and provides extra leverage for applying higher torque when needed. The tool's precise 5.0 mm hex profile delivers a secure fit on compatible fasteners, reducing the risk of rounding.

Suitable for

• Assembly of furniture and fixtures where deeper access is required
• Maintenance and repair of bicycles, machinery, and equipment with recessed hex bolts
• Mechanical and DIY tasks that require angled engagement or extended reach

Key specifications

• Tip size: 5.0 mm hex
• Tip style: ball end for angled engagement
• Material: chromium-vanadium (CRV) steel
• Form factor: long hex key (extended arm for reach and leverage)
• Finish: industrial finish suitable for workshop use

How to use

Insert the 5.0 mm hex tip into the corresponding fastener head and, if necessary, engage the ball end at an angle to reach offset screws. Use the long arm as a lever to apply torque; for higher torque, position the long arm perpendicular to the fastener and apply steady force. Avoid excessive bending of the short arm when using angled engagement to prevent tool deformation. Clean the hex profile and fastener seat before use to ensure a secure fit and prevent slipping.

Usage recommendations

Check compatibility with the fastener size before applying high torque. Use steady, controlled force and appropriate personal protective equipment. Store the tool in a dry place to avoid corrosion and inspect regularly for wear or rounding of the hex tip.