It is a small gadget that helps kill time. It's mini enough to put in your pocket, and take it out and have fun anytime. It's not only fun and interesting, but also effective for focus and deep thought. Moreover, it's perfect for fidgety hands, ADHD sufferers. Features: A good choice for killing time, helps relieve stress. Great for fidgety hands, ADHD sufferers. It's fun and interesting, also effective for focus and deep thought. Mini enough to put in your pocket, have fun anytime. Perfect size, suitable for adults and kids over 16 years old. How to use: Hold spinner in one hand and use the other hand to spin it rapidly and keep it spinning indefinitely by using small continuous strikes. Spinners can start and stop spinning only with the help of one finger. Specifications: Material: wood Item size: 8.2 * 2.8 * 0.7cm / 3.22 * 1.1 * 0.27in (L * W * H) Item weight: 38g / 1.35oz Package size: 8.2 * 2.8 * 0.7cm / 3.22 * 1.1 * 0.27in (L * W * H) Package weight: 38g / 1.35oz Package list: 1 * Hand spinner