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 . The two sides of the pen spinning mod are weighted to enhance the balance and stability, making it easier to find the balance , thereby improving the flexibility of . The rotating pen is made of non-slip and durable materials, so the pen 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 . Using the pen spinning pens can exercise your hands, eyes and cerebellum. Size: about 21.5cm/8.4 inches in length Colour: white + black Material: ABS + 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 the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.