DESIGN: This spinning ring is CNC cut into a smooth ring with precise curved edges designed to prevent buildup in the seams. Each gadget is assembled by hand. You just turn one side of the ring edge and the entire pinion ring will start running smoothly. SIZE AND STYLE: There are two styles available, full diamond and full bead bottom. Available in size7/8/9/10/11/12. Please refer to the picture details for the specific measurement method. MATERIAL: This ring is made of high quality copper 3-layer platinum plated and AAA+ cubic zirconia, which is strong and flexible, the bezel setting of cubic zirconia is not easy to fall off. The ring has a smooth surface inside and around the edges that won't scratch your fingers and will keep the color for a long time without turning your fingers green. But be careful to avoid contact with alkaline body wash. FUNCTION: When you are feeling tense or anxious, this ring can help you release your emotions, they can rotate very smoothly to relieve and relax your emotions. If you have a bad habit of picking your fingers or biting your fingers, you can also use this to improve. AS A GIFT: This swivel ring would be a fun gift for women and men, friends, family, husbands, wives, sons, band members, people who love mechanics. And can be used as Christmas gifts, Thanksgiving gifts, birthday gifts, graduation gifts.