Tightening Function: Equipped with a tightening function, this product automatically into place while rotating, ensuring a secure connection of screws and improving work efficiency and Double Head Design: This wrench features a double ended design, with end as a wrench for tightening of different sizes, and the other end as an adjustable eyeglass wrench for conveniently adjusting the tightness of eyeglass screws : chromium steel, this wrench is and resistant, ensuring long lasting stability and precise during use Its ergonomic design provides a comfortable grip, making it even more stable and precise Versatile Applications: for professionals in repair, assembly, and work, such as electronic device technicians and eyeglass repair shop assistants It is also suitable for daily maintenance and repairs at home,, and shops, including tightening eyeglass screws and repairing small appliances Suitable for Eyeglass Users: Designed for people who wear glasses, this tool is perfect for adjusting the tightness of eyeglass screws, effectively solve the common problem of loose screws, Manufacturer: SHANGYAKEJI