Features: This Double Head Self Tightening Wrench accommodates various nut size with ease, making it the perfectly tool for multiple dimension. From high strength 45# steel, this wrench boasts a self tightening feature for effortlessly operating, ensuring durability with its wear resistant and rust proof properties. For home users, DIY enthusiasts, and professional repair technicians, this tool meets diversed user needs across different skill leveling. Perfectly suited for household repairs, automotive maintenance, and furniture assembly, this wrench for both everyday and specializing tasks. Experience comfort with its smooth surfaces and ergonomic grip, ensuring a secure hold during use, while enhancing your efficiency in any project. Specifications: Types： 6-11mm/6-15mm/10-19mm/ 16-27mm/ 17-32mm Optional Component：45# Steel Size: about 6-11mm 156mm/6.14in 6-15mm 180mm/7.09in 10-19mm 240mm/9.45in 16-27mm 295mm/11.6in 17-32mm 340mm/13.38in Package Includes: 1PC Wrench note: Due to the problem of lighting effect, there might be tolerances in product, please understand. Please allow 1cm errors due to measurement.