Feature:1. MAIN PURPOSE: Universal wrench tool for opening and closing watch, quickly opening the watch back cover and removing battery screws.2. 3 POINT DESIGN: The watch cover opener is 3 point design, and the claw slots design makes it easier to grasp and not easy to fall off.3. STAINLESS STEEL: The watch opener is made of stainless steel, with high hardness, corrosion resistance, scratch resistance, long service life.4. APPLICABLE SIZE: The clamping range can be adjusted through the thumb wheel, can open case sizes ranging 17-53mm to meet more needs.5. OTHER ACCESSORIES: Equipped with 12pcs cover opening claws for easy use and replacement, the storage box is used to protect these tools.Specification:Item Type: Watch Case OpenerMaterial: Stainless SteelApplicable Case: Approx. 17-50mm / 0.7-2in.Package List:1 x Watch Case Opener12 x Case Opening Claws1 x Storage Box