![Bergeon 8008 Watch Case Opening Ball Bergeon 8008 Watch Case Opening Ball](https://cdn11.bigcommerce.com/s-iic0hc/images/stencil/300x300/products/48054/84157/case-opening-ball-8008__08332.1658723467.jpg?c=2)
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Case opening dies for the Bergeon 5700 Watch Case Opener. To be used on grooved/oyster ring case backs commonly seen on Rolex watches. Sizes include: 18.5mm, 20.2mm, 22.5mm, 26.5mm, 28.3mm, and 29.5mm. Seven piece set includes six dies and one adapter for attaching to the case opener.