Metal Pendulum Balance Ball Small Size Physics Science Accessory Desk Table Decor Game Newtons Cradle Steel Ball Size:Big 18.5×20cm please leave the ice mold

please leave the ice mold for 1 minute or rinse it with water for 15 seconds

loofah rope

easy-to-use gadget

and even late-night sweet hot chocolate

Size: The unfolded length

Metal Pendulum Balance Ball Small Size Physics Science Accessory Desk Table Decor Game Newtons Cradle Steel Ball Size:Big 18.5×20cm please leave the ice moldFeatures: Type: Cradle Ball Not only shows the pendulum, but also shows the rules for conservation of momentum and energy. Material: Metal, ABS Occasions: office, home, desk Features: Creative, room decor, table decorations Size: 9 cm x 9 cm x 7. 5 cm , ball diameter: 1 cm 0. 39" (approx.) Notes: 1. This product can only hit a few times, not hit all the time, please notice before you buy. 2. The color of the item may be different, due to the