3Pcs Double Open End Thin Wrench 20×21Mm Metric U-Shaped Spanner

Our double open-end wrenches are made of CR-V Steel, which has high hardness and excellent wear resistance. It keeps its surface smooth, reduces wear, and is not easy to deform, and the chrome plating on the surface can improve its corrosion resistance, not easy to rust, and can be used for a long time. The increased thickness of a standard open-end wrench ensures a more secure grip on nuts and bolts, resulting in better torque transfer and less slippage. The ultra-thin handle is comfortable to hold, and the clear, easy-to-read specifications engraved on the wrench make it quick and easy to select the right wrench size for different bolt sizes. 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.