The Bergeon 5500-C Watch Crystal Press is a specialized tool designed for fitting unbreakable tension ring crystals into watch cases. This tool is equipped with tapered dies and is specifically tailored for watches that require delicate handling, ensuring a precise and safe fit. Key Features: Purpose: Ideal for fitting unbreakable tension ring crystals, a common requirement in watch repair and maintenance. Die Composition: Comes with 9 dies and 1 holder. The dies are made of aluminum and finished with chrome for durability and precision. Die Sizes: The set includes a range of die sizes to fit various watch cases: 18/19mm, 20/21mm, 22/23mm, 24/25mm, 26/27mm, 28/29mm, 30/31mm, 32/33mm, and 34/35mm. Tapered Surfaces: The dies have tapered surfaces to ensure a snug and accurate fit for the watch crystal. Lower Die Support: Includes lower die support 5500-T21 for additional stability during use. Not for Mineral Glass Crystals: It's important to note that this tool is not recommended for use on mineral glass crystals. The Bergeon 5500-C Watch Crystal Press is perfect for professional watchmakers and enthusiasts who need a reliable and precise tool for working with tension ring crystals. The variety of die sizes and the quality construction make it a valuable and versatile addition to any watchmaking toolkit.