Good Finger Exercise: Spinning pen can make fingers flexible, improve concentration, capacity for reaction and brain vitality. It has a central symmetrical balance point, which can help practice and keep maintain balance. Comfortable to Use: The head of rotating pen is made of environment-friendly plastic with embossed design, which is shock absorption, anti-wear and skid resistant. Besides, the bottom of the pen have steel balls for counterweight. These smart design is good for holding and using. Easy to Storage: The pen holder is made of polypropylene, which is sturdy and durable. The removable design makes it easy to store. The size of the pen is only 22cmx1.6cm/8.7inchx0.6inch. So that it can be easily put into the stationery bag, pencil case, schoolbag, etc., which is convenient to carry and use at any time. Varied Colors: These pens are available in four colors, including black, white, blue and pink. Their colors are fresh and bright, and the pens are thin to hold, suitable for most people. Friendly for Beginners: This spinning pen is easy to use and is very suitable for beginners to practice. It is also a good choice to give it to classmates, friends and colleagues. It is helpful for thinking, learning and anxiety. Specification Product name: Novelty Creative Spinning Pen Material: plastic Color: As picture shown Type: type 1/2/3/4/5 Pen size: 22cmx1.6cm/8.7inchx0.6inch Storage tube size: 23.5cmx2.2cm/9.3inchx0.9inch Net weight: 24g/0.85oz Gross weight: 41g/1.45oz Package includes: 4 x Spinning Pen 4 x Storage Tube