Open-end wrench Dedra 8x9 mm model 1471

Open-end wrench Dedra 8x9 mm model 1471 is a compact hand tool with two opposite fixed jaw sizes—8 mm and 9 mm—designed to tighten and loosen small hexagonal nuts and bolts. Made for tasks requiring access in confined spaces, this lightweight wrench provides a solid contact surface for metric fasteners commonly found in mechanical, automotive, bicycle and household equipment.

Advantages

The double-ended design combines two commonly used metric sizes in a single tool, reducing the number of wrenches required for small repairs. Its slim profile allows access to tight locations where larger wrenches cannot fit. The fixed open jaws deliver reliable torque transfer to hex heads while minimizing rounding of fasteners when used correctly. The simple, durable construction makes it suitable for occasional maintenance and professional use where small-size fasteners are present.

Suitable for

• Mechanical and machinery maintenance involving small metric nuts and bolts
• Automotive tasks on components with 8 mm or 9 mm hex fasteners
• Bicycle repairs and adjustments where compact tools are needed
• Household assembly and appliance maintenance with small hex hardware

Key specifications

• Wrench type: open-end, double-ended
• Jaw sizes: 8 mm and 9 mm
• Material: forged steel construction (surface finish may vary)
• Profile: slim/low-profile head for access in confined areas
• Finish: corrosion-resistant coating or plating suitable for workshop use
• Hand orientation: suitable for right- and left-handed use (manual operation)

How to use

Select the correct jaw size (8 mm or 9 mm) that matches the fastener head. Place the open jaws squarely onto the hexagon flats to ensure full contact and minimize slippage. Apply steady manual force in the required direction to tighten or loosen the fastener; for higher torque needs, reposition the wrench or use an appropriately sized tool. Avoid using excessive impact or lever extensions that exceed the tool's intended manual use, and inspect the contact surfaces for wear before use.

Usage recommendations

Use the wrench on clean, undamaged fasteners and choose the jaw that provides the best fit. Keep the tool dry and store in a toolbox to maintain the finish. For corroded or rounded fasteners, consider penetrating lubricant and appropriate extraction tools rather than forcing with excessive torque.