ZHUPI Square Balls Billiard Balls Pendulum Balls Decompression Toys Frame Energy Conservation Physical Model

Features: Funny, Creative, Room Decor, Desk Ornaments Material: Metal, ABS Not only demonstrates a pendulum, but also shows the laws of conservation of momentum and energy. Occasions: Office, Home, Table Desk Type: Cradle Ball Shape: Geometric Package:1 * Cradle Ball Includes steel balls, plastic frames and base. Size: 9cm x 8.5cm x 7cm/, Ball Diameter: 1cm/0.39" (Approx.) Often used as a toy. Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.