Feature 1Durable Stainless Steel Materials: The watch crown winder tool is made of rustproof stainless steel, durable and has a good texture, with a long service life. 2Repair Precisely: A stainless steel precision nut driver of the watch crown winder can securely hold the small size nuts when installing, which improves repair efficiency. 3Save Time and Effort: With the stainless steel crown winder tool, the winding process is more efficient, avoiding the tedious process of manual winding. 4Convenient: The crown winder is easy to use, and with this handy helper you can repair the watch more safely and save your fingers, making repair easier. 5Widely Used: Crown assistant is suitable for repairing mechanical watches and convenient winding. Suitable for personal family use and watch shops.Product Name: Watch crown winder toolMaterial: Stainless steel .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x WinderTool