[black Rotating Pen]Different from other pens, our pen adopts a dynamic balance support ring in the middle, better reach the golden balance point, thereby enhancing the balance and stability. [Size Information]The rotating pen is 8.6 inches in length. Non-slip, wear-resistant and pressure-resistant, suitable for beginners and enthusiasts. Playing the pen can relieve stress and add fun to study and office. [Wide Applications]Using the rotating pen can train hands, eyes and cerebellum. Long-term training can help improve concentration, memory and learning ability. In addition, it can also help you the pressure of work and life. [Exquisite Design] and good for holding. The two ends of the spinner pen are carefully designed to easier to find a balance point. And -resistant silicone cap design is a great way to add the durability of the rotating pen. Specification: Colour:black Material:Alloy + Silicone Package Contents: 1 * Spinner Pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.