OPP bag packaging Product precise sphere diameter: 6.5cm Square diameter: 6.5cm Expand diameter: 10CM Individual weight: 48g Color:as photos Features: 1. In situations of stress, anxiety, and distraction, repeated pressure can be used to regulate emotions 2. Suitable for everyone, a few minutes a day can effectively help you improve your attention and hand eye coordination skills. 3. It can bring you endless joy and surprise! 4. You can play anytime, anywhere. Pay attention to this during the development process, and it will be very beautiful and eye-catching anywhere it is placed 5. Anxiety caused by stress has always been one of the greatest threats to modern human health, but the road is always more than just a problem Due to manual measurement, there may be an error of 0-2cm. Please understan