Watch Back for Case Opener Die Repair Battery Replace Tool Jewelry Wristwatch Repair Tool for Watchmaker Features: brand new and high quality. Necessary tools for watchmakers and watch repairing workers. Made of superior metal material, which is solid and durable. Compact size and light weight is easy and convenient to carry and use. Fit for R watch back for case opening. With fine workmanship and high quality, for long for time use. Specification: Color: silver Material: steel Bottom Outer Ring Diameter: Approx. 4cm/ 1.6in Height: Approx. 2cm/ 0.8in Die Inner Diameter: Approx. 36.5mm/ 1.4in Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 Die