Description: Package Contains: The package includes 20 pieces in total, an essential tool for both professional watchmakers and DIY enthusiasts alike.Premium Material: Made from premium alloy material, these tools are sturdy, durable, and built to last.Function: These dies are great for pressing the back cover of the watch after battery replacement or repair without causing any damage.Specifications: The set includes a variety of sizes to fit different watch cases. The diameters range from 20mm to 58mm, providing a wide variety of sizes to meet your different needs for watch repair.Wide Application: Easy to use. applicable to different types of watches, Suitable for watch repairing, case closing, etc. Specification: Material: Alloy Size Chart: 2cm/0.79inch2.2cm/0.87inch2.4cm/0.94inch2.6cm/1.02inch2.8cm/1.10inch3cm/1.18inch3.2cm/1.26inch3.4cm/1.34inch3.6cm/1.42inch3.8cm/1.50inch4cm/1.57inch4.2cm/1.65inch4.4cm/1.73inch4.6cm/1.81inch4.8cm/1.89inch5cm/1.97inch5.2cm/2.05inch5.4cm/2.13inch5.6cm/2.20inch5.8cm/2.28inch Package Includes: 20pcs Watch Press Dies Note: Please allow slightly errors due to manual measurement and different monitors.