Feature: 1. Tool Sets: This kit contains a slot screwdriver, a tweezers, a watch pry, a three pronged back cover opener, and a specially equipped set of 17pcs dies (5 sizes and shapes). These carefully designed tools are combined to meet your various watch repair needs. 2. Material: Carefully crafted from steel, our 21 piece watch repair tool set ensures stability and durability in long term use. You can rest assured that you can use them without worrying about damage, making your watch repair process smoother． 3. Flexible: Equipped with a watch opener, you can remove the back cover of your watch without any damage, leaving no marks or scratches. The watch opener is designed to be flexible and easily adjustable to fit different case sizes up to a maximum extension of 35mm. 4. Versatile: This tool kit is perfect for performing a variety of watch repair tasks such as opening watch back covers, changing watch batteries and more. Comprehensive functions are designed to make your watch repair work more convenient. 5. Ideal Choice: This kit is great for watch repairs. Whether you need to replace the battery or repair the movement, it can easily do the job and help you complete the repair work, making the whole process easier and faster． Specification: Item Type: Watch Back Case Opener Kit Material: ABS, Stainless Steel Usage: Watch repair tool Set Includes: Screwdriver x 1, tweezers x 1, watch back cover opener x 1, 3 Prong Watch Back Remover x 1, 3 Prong Watch Back Remover steel head x 17. Package List: 1 x Slot Screwdriver 1 x Tweezers 1 x Watch Pry 1 x 3 Prong Watch Back Remover 17 x 3 Prong Watch Back Remover Dies 1 x Storage Box