Auto Adjusting Mechanism for Precise: with auto adjusting mechanism, these wrenches onto fasteners securely, slippage from manual misalignment Ideal for tasks requiring frequent tool changes, such as automotive repairs and furniture assembly Wide Compatibility: Compatible for both standard and nonstandard nut and bolts, this set is ideal for household maintenance, plumbing, & mechanical repairs Includes 2large wrench ( 8-24mm) and 2small wrench ( 3-17mm) for needs Auto Tightening Structure for Effortless Use: The innovative auto tightening design reduces hand strain by requiring minimal force to grip objects firmly High Carbon Steel for Durability: Made from high carbon steel, these wrenches wear resistance and rust protections, outperforming standard steel They remain reliability in harsh or humid conditions Double Head Design for Versatility: This wrench set features a double head design that easily adapts to various nut and bolt sizes, eliminating the limitations of single size wrench Perfect for home repairs & professional projects, it ensures quick switching and efficiency, Manufacturer: Kaeltsyn