The spinning pen is adopts a middle dynamic balance support ring, and the spin pen body is made of ABS material, which is light, strong, comfortable to hold, and easy to operate and use. The two sides of the pen spinning mod are weighted to enhance the balance and stability, making it easier to find the balance point, thereby improving the flexibility of use. The rotating pen is made of non-slip and durable materials, so that the pen mods is not easy to be broken or damaged, and the two ends are equipped with anti-drop silicone caps, which can maintain a long service life. Suitable for all ages, whether it is the elderly, children or adults, you can fully feel the joy of moving your fingers. Using the pen spinning pens can exercise your hands, eyes and cerebellum. Size: about 21.5cm or 8.4 inches in length Colour: white and black Material: ABS and aluminum alloy Package Contents: 1 x Pen Spinning 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.