These 5 Fidget Spinner diameter: 2.95 inches. Thickness: 0.31 inches. It comes with various colors like Green, Red, White. With practice, the spinners can be used with one hand only. To use the anxiety toys on a table simply quad fidget spinner press the center to keep it stable and at the same time span. With fidget spinners, you will be curb unwanted habits such as nail biting and smoking.