Watch Case Holder For Watches Adjustable 4 Pins (Up to 42 millimeter) Watch Case Holder Used for Securing Watch Cases -Opening and Closing Waterproof Backs Used To Hold Large Watch Case In Place To Open / Close Backs Minimize the Risk of Slipping and Scratching Watch Backs Firmly Holds Cases up to 42mm millimeters in Diameter Vise can Mounted on a Desk or Work Bench