[]there are 2 different colors of the spinner pens, White and black; The low-key classic color makes these pens very attractive, suitable for people of different ages, let them feel confidence and flexibility in the process of pen . [Enough to use]you will receive 4 pcs pen , enough quantity and styles can meet your needs for daily use and replacement, and is designed with weighted beads on both sides to increase the weight and balance, making the rotation more stable, offering you a good using experience. [Quality material] the barrel of the pen is made of ABS material, also with an dynamic balance support ring in the middle of the pen, which are sturdy and solid, not easy to fade or deform, also are and reusable. [Broad usage for]Suitable for children and adults, using the rotating pen can train hands, eyes and cerebellum, Long-term training can help improve concentration, Whether it's , at school, on the road, for car and plane travel, it's a good choice Length: About 21.5cm Material:ABS colour:white + black Package Contents: 4 * Pens Only the above package content, other products are not included. Note: Light 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.