Open-end wrench STANLEY 4-87-097, 8×9 mm, 140 mm length, silver

Open-end wrench STANLEY 8 x 9 mm model 4-87-097 is a compact double-ended hand tool designed for turning metric nuts and bolts. Each end provides a fixed jaw opening — 8 mm on one side and 9 mm on the other — allowing quick switching between close-size fasteners without changing tools. The wrench is intended for manual torque application in mechanical, automotive and household environments where access and simplicity are priorities.

Advantages

The steel construction ensures consistent strength and resistance to bending under typical manual loads. Two fixed opposing jaws offer secure engagement with hexagonal fasteners, reducing the risk of slippage when used correctly. Its compact double-ended layout saves space in a tool kit and enables work in confined areas. The simple, solid design requires no adjustment and is maintenance-free beyond routine cleaning and occasional inspection for wear.

Suitable for

• Tightening and loosening metric nuts and bolts in small assemblies
• Automotive repair tasks that require compact hand tools
• Household maintenance and furniture assembly
• Light mechanical and workshop applications

Key specifications

• Jaw sizes: 8 mm and 9 mm
• Double-ended open wrench design for two-size use
• Material: forged steel construction for strength and durability
• Finish: corrosion-resistant surface treatment
• Hand tool for manual torque application
• Compact length suited for confined spaces

How to use

Select the end corresponding to the fastener size and seat the jaws fully onto the nut or bolt head. Apply steady, controlled force to turn the fastener, keeping the wrench aligned with the fastener axis to minimize rounding. If greater leverage is required, use a longer appropriate tool rather than applying excessive force to this compact wrench. After use, wipe the tool clean and store it in a dry place to preserve the finish and prevent corrosion.

Usage recommendations

Use the 8 x 9 mm open-end wrench for routine manual tasks and avoid subjecting it to impact loads or using it as a hammer. Inspect jaw faces for wear before precision work to ensure proper grip and reduce fastener damage. For high-torque needs, choose a suitably sized longer wrench or a box-end/socket tool.