4pcs Spinning Pen Rolling Finger Rotating Pen Gaming Trick Pen Stress Releasing Brain Training Toys for Kids Adults Students

Highlights: ▶ Turning the pen can effectively increase the coordination between the brain and the hand ▶ Exercise the brain's responsiveness, agility, and increase finger strength! ▶ If you turn well, you can vent your emotions, and the more you turn, the easier it will be. ▶ The refill can be replaced, which is convenient for dual use. ▶ Size: About 192mm in length ▶ Material: Plastic ▶ Main use: Office, stationery ▶ Style: Random hair ▶ Refill color: Black ▶ Quantity: 4pcs