Reliable: The rotating pen adopts a symmetrical design, the nib is made of TPR soft glue, the pen barrel is made of ABS material, and the dynamic balance support ring is made of aluminum alloy, which is reliable and sturdy, and can be used for a long time.Stress reduction toy: This rotating pen is suitable for children and adults; you can use this pen to train your hands and eyes, thereby improving your concentration memory and learning ability; it can also help you relieve work and life stress.GREAT GIFT GIFT: You can express your love and care by giving these gaming finger pens as gifts to friends, relatives, colleagues and classmates on Thanksgiving, Christmas, New Years, birthdays and other holidays.Note: This product is a rotary pen and does not include refills. If you add the refill yourself, you will lose balance when you turn the pen.Color: blue+blackSize: Length 20.5cm maximum diameter 1.5cmQuantity delivered: 4 pieces