Material : alloy metal
Bearing : metal
Size : 7.5 x 7.5 x 1.5 cm
1. High Speed stainless steel Bearing .These are removable.
2. Great Toy For Fidgeters. Flick And Spin For Hours With Just One Or Both Hands
3. Great For Anxiety, Focusing, ADHD, Autism, Quitting Bad Habits, Staying Awake.
4. 688 rail bearings, no steel ball, average spin time of 3 minutes, able to spin for 5 minutes and 30 seconds