The dual-head multifunctional self-tightening box end wrench is an essential tool for automotive repair and household tasks. This universal wrench is designed to fit various sizes of nuts and bolts, making it incredibly versatile. Its self-tightening feature ensures a secure grip, reducing the effort needed to tighten or loosen fasteners. Ideal for both professional mechanics and DIY enthusiasts, this wrench simplifies your work by adapting to different fasteners without the need for multiple tools. Features -Color:Silver -Material:Chrome vanadium steel -Size:14.50X2.60X0.30cm/5.70X1.02X0.12in -Multifunction design: this wrench is suitable for both automotive repair and household tasks, offering a wide range of applications -Selftightening feature: the dualhead design automatically adjusts to different sizes, eliminating the need to manually change wrench sizes -Time saving operation: made from highstrength materials, this wrench ensures easier and more efficient use, reducing user fatigue -Durable construction: crafted from steel materials, this wrench is built to last, providing long term reliability and performance -Universal wrench: suitable for various screws and nuts, this versatile tool is both convenient and practical for multiple uses Package list: 1 x double ended self tightening wrench