Features: The Multifunctional Auto Locking Wrench features rapid licking locking technology and a oversized jaw design, crafted from industrial grades 40CR alloy steel for secure grip and practical performances in professional environment. Its auto adjust mechanism combines with a ergonomic nonslip handle to deliver effortlessly nut/bolt gripping, while maintaining lightweight portability (1.2lbs) for toolkit and worksites mobilities. Ideal for mechanics, construction workers, and DIY enthusiasts requiring reliable torques application in automotive repairs, machinery maintenance, or household plumbing projects. Excels in workshop, garage, and industrial setting for equipment assembly, vehicle brake adjustments, and stubborn fastener removal where traditional wrenches fail. This adjustable spanner tool outperforms standard models with corrosion resistant alloy construction and double directional locking capability, eliminating slippage during overhead pipe fittings or tight space engine work. Specifications: Material: 40CR alloy Type:6Inch/8Inch/10Inch/12Inch(Optional) 6Inch Size:Approx.150mm/5.91inches 8Inch Size:Approx.200mm/7.87inches 10Inch Size:Approx.250mm/9.84inches 12Inch Size:Approx.300mm/11.81inches Package Includes: 1Pc Multifunctional Quick Auto-Locking Wrench note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.