DocumentOur open-end wrench is made of carbon steel with high hardness and excellent wear resistance. The galvanized finish creates a protective zinc layer that provides rust and corrosion resistance, ensuring long-term durability even in humid or outdoor environments.Super thin single open end wrench features an ultra-thin jaw design that enables access to confined spaces like crowded engine compartments or densely packed mechanical setups, reducing clearance interference for easy fastener engagement in tight gaps while maintaining reliable torque transmission, thus enhancing maneuverability in narrow areas for efficient tightening and loosening tasks.Mainly used to tighten or loosen nuts and bolts with flat sides, especially when a socket wrench or adjustable wrench cannot reach them due to space constraints. It is widely used in automotive repair, plumbing, furniture assembly and repair, mechanical repair, construction and DIY projects.Please use a caliper to measure the opposite sides of the screw and nut before purchasing, and then choose the corresponding open-end wrench. Always use the correct size wrench to avoid rounding the bolt head or damaging the wrench.

5pcs Thin Single Open End Wrench 20mm Metric 126mm Long U-Shaped Spanner
- Our open-end wrench is made of carbon steel with high hardness and excellent wear resistance. The galvanized finish creates a protective zinc layer that provides rust and corrosion resistance, ensuring long-term durability even in humid or outdoor environments.
- Super thin single open end wrench features an ultra-thin jaw design that enables access to confined spaces like crowded engine compartments or densely packed mechanical setups, reducing clearance interference for easy fastener engagement in tight gaps while maintaining reliable torque transmission, thus enhancing maneuverability in narrow areas for efficient tightening and loosening tasks.
- Mainly used to tighten or loosen nuts and bolts with flat sides, especially when a socket wrench or adjustable wrench cannot reach them due to space constraints. It is widely used in automotive repair, plumbing, furniture assembly and repair, mechanical repair, construction and DIY projects.
- Please use a caliper to measure the opposite sides of the screw and nut before purchasing, and then choose the corresponding open-end wrench. Always use the correct size wrench to avoid rounding the bolt head or damaging the wrench.