Feature:1. Exquisite Workmanship: The copper balls have been accurately measured, and the weight is uniform. The selected base and steel balls are made of high quality materials and have an excellent texture.2. Ideal Gift: The classic design makes it an excellent gift for children's family, friends and colleagues, so that they can relieve stress when they need it, and bring fun for children.3. Long Swing Time: Due to the resistance of air and friction, the balance ball can last for 1520 seconds. It is a cool and interesting game, suitable for office workers to avoid anxiety.4. Various Gameplay: You can find a variety of gameplays, for example, a ball at one end hits the neighbor, the ball at the other end hits the air, and the ball in the middle stays still.5. Relieve Stress: Balance pendulum ball is a charming desk decoration that can not only add beauty to the room, but also relieve your stress when playing.Specification:Item Type: Balance Pendulum BallMaterial: MetalCombined Size: Approx. 15 x 14 x 12cm / 5.91 x 5.51 x 4.72in.Package List:1 xBalance Pendulum BallNote:1. Manual measurement may have 0‑1cm error. Please make sure you don't mind before ordering.2. Due to the difference of different monitors, the picture may not reflect the actual color of the item.