Hex Key with Ball 4.0 mm, Dedra CRV long, model 06F075

Long hex key 4.0 mm from Dedra, made of chrome vanadium (CRV) steel, designed for tasks that require precise torque and reliable wear resistance. The tool features a ball end that allows angled insertion into hex fasteners, improving access in confined or awkward positions. Its extended length provides greater reach for recessed or hard-to-reach screws while maintaining grip and control during assembly, maintenance and repair work.

Advantages

The Dedra long hex key is forged from CRV steel for enhanced strength and durability, with a straight shank for stable torque transfer. The ball end enables engagement at an angle, reducing the need for perfect alignment and speeding up work in tight spaces. The longer profile increases reach without compromising handling, making it practical for furniture assembly, bicycle maintenance and light machinery servicing.

Suitable for

• Assembly and tightening of furniture fasteners with 4.0 mm hex drive
• Bicycle adjustments and repairs where recessed or angled bolts are present
• Maintenance of small machinery and equipment requiring a 4.0 mm Allen key
• Situations that demand access to fasteners in confined or awkward locations

Key specifications

• Hex size: 4.0 mm
• Material: chrome vanadium (CRV) steel
• End type: ball end for angled entry
• Design: long shank for extended reach

How to use

Insert the short end or the ball end into the hex recess of the fastener depending on available space and required leverage. Use the long shank for increased reach or when working with recessed bolts; use the short end when higher torque is necessary. When engaging the ball end, apply gentle axial pressure to keep the key seated in the fastener while turning. Maintain steady, controlled turns to avoid cam-out and to protect both the fastener and the tool.

Usage recommendations

For best results, select the 4.0 mm hex key size only for matching fasteners. Avoid excessive force that could round the fastener head or deform the tool. Keep the key clean and dry after use to prevent corrosion and inspect it periodically for wear; replace the tool if the hex profile becomes rounded or damaged.