[black Rotating Pen]Different from other spinning pens, our pen adopts a dynamic balance support ring in the middle, better reach the golden balance , thereby enhancing the balance and stability.[Size Information]The spinning rotating pen is 8.6 inches in length. Non-slip, wear-resistant and pressure-resistant, suitable for beginners and enthusiasts. Playing the spinning pen can relieve stress and add to study and office.[Wide Applications]Using the rotating pen can train hands, eyes and cerebellum. Long-term training can help 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 make it easier to find a balance . And -resistant silicone cap design is a great way to add the durability of the rotating pen.Specification:Colour:blackMaterial:Alloy + SiliconePackage Contents:1 * Spinner PenOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.