TIMEWHEEL Precision Hand Held Case Opener Tool for Rolex Tudor Oyster Waterproof Watches Precision & Quality Tool (please refer to pictures above for product detail) at an Afforable Price Designed to Opens & Close Rolex Tudor Oyster Watch Cases Works Most Other Grooved Standard Rolex Type Waterproof Watch Cases 6 Grooved Metal Round Dies From 18.5mm to 29.5mm Diameter Must Have Tool for Watchmaker & Watch Collector