Open-end Wrench Kuźnia Sułkowice 9×11 mm model 1-131-10-101

Open-end Wrench Kuźnia Sułkowice 9×11 mm model 1-131-10-101 is a two-ended flat wrench designed for tightening and loosening hexagonal nuts and bolts with 9 mm and 11 mm sizes. Manufactured by Kuźnia Sułkowice, this compact hand tool provides fixed open jaws on each end to engage fasteners in confined spaces and on small mechanical assemblies. The wrench is intended for use where a slim profile and direct contact with the fastener flats are advantageous.

Advantages

The open-end design allows quick placement on fastener flats and rapid repositioning without full rotation, which is useful on closely spaced components. A two-size configuration reduces the number of tools needed for small fasteners, and the flat profile improves access in narrow gaps. Materials and finish provide surface protection against corrosion and help maintain a reliable gripping surface for repeated use.

Suitable for

• Automotive maintenance on small fittings and hose clamps
• General mechanical repairs and light engineering tasks
• Household maintenance, plumbing connections and furniture assembly
• Electrical and electronics enclosures where space is limited

Key specifications

• Two open-ended sizes: 9 mm and 11 mm
• Flat, slim profile for access in confined spaces
• Fixed open jaw geometry for positive engagement with hex fasteners
• Hand tool length suitable for small-scale tasks and close-clearance work
• Durable surface finish for corrosion resistance

How to use

Select the end matching the fastener size (9 mm or 11 mm) and place the open jaws fully onto the flats of the nut or bolt. Apply steady force in the required direction to tighten or loosen the fastener, avoiding sudden impacts. For limited swing clearance, reposition the wrench after each limited-angle turn rather than forcing wider movement. Keep the jaws clean and free of debris to ensure secure contact and reduce the risk of rounding fastener corners.

Usage recommendations

Use the wrench only on appropriately sized fasteners to avoid damage to the tool or the fastener. Do not use as a hammer or pry bar. For higher torque requirements, select a socket or box-end wrench sized for the application to prevent tool or fastener deformation.