Sufficient to Use: the package contains 2 pieces of spinner pens, enough quantity can satisfy your needs of daily use and replacement needs, and can be applied for a long time Stable Rotation: the spinning pen is measured approx. 8.6 inches long, which is long enough for application, and it is easy to rotate; The metal weighted beads on both sides can help to keep balance, make the rotation more stable, provide you with a comfortable using experience Safe and Reliable Material: the pen spinning mod is made of quality ABS material, with the aluminum alloy dynamic balance support ring in the middle, the tip parts adapts TRP soft rubber with aluminium end, sturdy, reliable and safe, last for a long time; Good and sturdy balance will provide you with an easy and light spinning experience, prevent the pen from dropping off, offer you a safe and funny pen game Soothe the Stress: the pen spinner can help to train your hands, eyes and cerebellum at some certain; Long term training is helpful when you are thinking, helping you focus on attention, and improve memory; What's more, it can also help you to relieve stress from work and life; Suitable for both children and adults Funny and Thoughtful Gift: the gaming finger pens are easy to operate, they can bring you a sense of relaxation through finger movement, and it seems to make you feel back to school when you spin them, very nice to send to friends, lovers, and families as gifts to express your love and care