NINVVS 4 Piece of Spinning Pen, Finger Rotating Pen with Refill, Writing Student Office Worker Entertainment Ballpoint

[Package contents] You will receive 4 pieces of spinning pens, including four colors: blue, purple, red, and yellow. The size of the rotating pen is 19.2cm, which is easy to carry and meets your needs for use and replacement. [Product material] The spinning pen is made of plastic and aluminum alloy balance ring, which is durable, not easy to break, and comfortable to hold. It adopts anti-fall pen cap design to increase durability. [Replaceable refill] This spinning pen uses a 0.5mm refill, the black ink flows out evenly, the refill can be replaced, and the writing is smooth, giving you a better writing experience. [Easy rotation] The aluminum alloy dynamic balance support ring in the middle of the rotating pen can help you master the balance, and the alloy detachable nib at both ends improves stability. This allows you to rotate the pen more easily. [Product function] The spinning pen can be used to improve the flexibility and coordination of your fingers, help you relieve the pressure of work and study, and bring fun to your life.