The moisture meter can quickly measure the moisture content of the grain. 1. Outstanding production: each ball has been accurately measured, the weight is uniform and consistent, and the uniquely selected base and ball are made of high-quality materials. 2. Long swing time: Classic design, due to air resistance and friction, the balancing ball can withstand 15-20 seconds and last longer. 3. Multiple ways to play: For example, one ball at one end hits a neighbor, the ball at the other end hits the air, while the ball inside remains stationary. 4. Relieve stress: The Balls toy is a cute desk decoration that can not only add beauty to the room but also relieve stress while playing. 5. Educational Importance: The ball-shaped toy is also a great educational gadget that can help children understand the importance of energy saving. Please allow slight dimension error due to manual measurement. Item Type: Ball Pendulum Balance Material: ABS plastic, metal Combined Size: Approx. 9,5 x 9 x 7,5 cm/3,7 x 3,5 x 2,9 inch Color: black, red wine List of packages: 1 x Base 1 x Balancing Ball