Features: 3D Printed Gear Ball: The gear ball is an innovative finger toy designed to provide stress relief and anxiety reduction effects. It is made of high-quality 3D printed materials with a smoothes surface and durable structure. Suitable for Everyone: This toy is suitable for people of all ages, including adults and children over 6 years old. It can not only help relieve stress and anxiety, but also provide entertainment and relaxation effects. Logic Coordination - A very interesting rolling ball,Keep your hand busy have fun for hours exercise logical thinking, color sensitivity and hand coordination. Great to enhance a child's independent thinking. This track ball is perfect for killing time, fidgeting, and avoiding electronics. It make some noise to get your kid's attention.It's a healthier gameplay to practice-focus and concentration. This toy is perfect for use while working, studying or traveling. It is small and lightweight, easy to carry, and can be used anytime, anywhere Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: plastic Specification: 6x6cm/8x8cm/10x10cm Weight: 36g/48g/78g Package List: 1x 3D Printed Gear Ball