Feature:1. This tool is suitable for watches with screwin back cover, easy to use and adjustable.2. For the watch with no bayonet on the back cover, please use our prying knife to open the back cover.3. Portable twoclaw watch back case cover opener, the largest cover can be opened under 5.5cm.4. Made of Aluminum, the opener is featured with stable appearance and good performance.5. The product is convenient and simple to use, without professionals, you can easily open the back of the watch.Specification:Item Type: Watch back case openerMaterial: AluminumApplicable Products: Open the back cover of the watch, the largest can be opened 53mm / 2.1in, the smallest can be opened 12mm / 0.5in.Package List:1 x2 Claw Watch Back Case Opener