Features Soft And Flexible Design: Protects your watch from scratches while ensuring high practicality during use Innovative Opening Mechanism: Allows for simple, accurate, and safe access to your watch back without hassle Versatile Sizing: Conforms evenly to various watch sizes, enabling safe and effective back cover removal without damage Durable Rubber Construction: Crafted from high-quality rubber materials, ensuring ease of use and longevity in your watch repair tasks Attractive Color Variety: Available in 4 vibrant colors, catering to your personal style while meeting practical needs Features: 1、Soft, flexible design protects the watch from scratches, which keeps case opening ball with high practicality. 2、Innovative tool that allows you to open the watch in a simple, accurant and safe way. 3、Just squeeze, press and turn. The balls evenly and firmly conform to the of various watch sizes, allowing you to remove the back safely and effectively without damaging the watch. 4、Made of rubber materials in , watch opener can be easy to use in the practical life. 5、Entitled with pratical adoptability, attractive four colors can meet your needs, . Specification: Item Type: Case opening ball Material: Rubber Diameter When Inflated: Approx. 7.3cm / 2.9in Color: Yellow, red, blue, green Instructions for Use: Just squeeze, attach the back cover of the watch, press and turn to open. Package List: 4 x Case Opening Ball Package List 4 x Case Opening Ball