Open-end spanner Proline 14x15 mm model 34314 – double-size hand wrench

Open-end spanner Proline 14x15 mm model 34314 is a double-size hand wrench designed for tightening and loosening nuts and bolts with 14 mm and 15 mm across-flats dimensions. Manufactured by Proline for workshop, maintenance and general repair tasks, this open-end spanner features two fixed jaws on opposite ends to provide direct contact with fasteners where clearance or accessibility restricts the use of ring or socket tools.

Advantages

The open-end spanner offers a slim profile and fixed-size jaws that ensure accurate grip and efficient torque transfer to hexagonal fasteners. Its double-size design reduces the number of tools required in a toolbox by combining two common sizes in a single wrench. The tool is suitable for operations in confined spaces thanks to its low-profile ends, and the solid construction provides reliable performance for routine automotive, household and light industrial maintenance tasks.

Suitable for

• Automotive repairs and maintenance where 14 mm and 15 mm fasteners are present
• Household assembly and repair jobs, such as furniture and appliance maintenance
• Light industrial and workshop tasks that require precise manual torque application
• Situations with limited access where a slim open-end wrench is needed

Key specifications

• Wrench type: open-end (double-size, two fixed jaws)
• Working sizes: 14 mm and 15 mm across flats
• Material and finish: robust steel construction with corrosion-resistant finish
• Profile: low-profile ends for access in confined spaces
• Use orientation: manual hand tool for tightening and loosening hexagonal fasteners

How to use

Select the jaw corresponding to the fastener size (14 mm or 15 mm) and place the open end fully over the nut or bolt head to ensure full contact on the flats. Apply steady, controlled force in the intended direction—clockwise to tighten, counterclockwise to loosen—keeping the wrench aligned with the fastener to minimize rounding. Reposition the wrench as required on multi-turn operations and avoid using extension bars or excessive leverage that could deform the tool or the fastener.

Usage recommendations

Inspect the wrench before use for signs of wear or damage. Clean and store the tool in a dry environment to preserve the corrosion-resistant finish. For high-torque or precision fastening tasks, consider using a torque wrench or an appropriately sized ring or socket tool to reduce the risk of rounding fastener corners.