1.Multifunctional Universal Wrench: Self-Tightening Universal Wrench Suitable for disassembling screws of various specifications. 2.High-Quality Material: The wrench is made of high-quality CR-V forged steel with high hardness and super durability. It could stand usage and work of much more years. 3.Double End Wrench Range: Chrome plating Polishing rustproof, standard 5/16 inch to 7/8 inch and metric 8mm to 22mm nuts and bolts. 4.Universal Wrench design: The unique ultra-long design can increase the torque, Make better use of the lever principle, more labor-saving. 5.Wide Application: This universal wrench is Perfect for home improvement, construction, carpentry, autob, bicycle, motocycle repair, and household maintenance