Material: This watch case opener is made of metal and provides a firm grip, even when removing the metal case of a waterproof watch. It features a grooved handle for extra grip and an adjustable knob. It offers three positions to secure the watch. Easy to use: This watch case opener easily opens watch cases without causing any damage and is suitable for both professionals and regular users. It is a practical tool for watch repairs. Adjustable: This watch case opener has an adjustable knob, making it easy to adjust to open most screw-down watch cases. This adjustable shaft makes opening the case even easier. Screws included: Our watch case opener comes with 18 screws; these screws are replaceable for different case shapes. This watch case opener can easily be adjusted to fit different case sizes, minimizing the risk of slipping and scratching. Practical, lightweight and portable: Very practical, portable and easy to use. Suitable for professionals and home use. Reusable. If you want to repair your watch yourself, this is your best choice.