Specifications:Can be played with one or both hands.The bearings can be removed and replaced.Fast and stable rotation that lasts at least 1 minutes.Great for anxiety, focusing, ADHD, Autism, quitting bad habits, staying awake.Easy to carry, also effective for focus and deep thought.Use This Way:Hold spinner in one hand and use the other hand to spin it rapidly. Using small continuous strikes to keep it spinning.With practice, spinners can be spun using the fingers of one hand to stop and start spinning.Type: Hand SpinnerMaterial: Zinc AlloyFunction: RotatingOccasions: Home, Office, School, etcFeatures: Creative, Stress Relief, Portable, Tip Spiral ToySize: 5cm/1.97" (Approx.)Notes:Only for people above 16 years old. The hand spinner is very sharp, please be careful!This product can not be washed by water! After playing a long time, soak it with alcohol, for cleaning the bearing.Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.