Features:
♛【Outstanding Advantage】: It is a very funny decompression toy that a ball can be used to hit other balls and swing. Not only demonstrates a pendulum, but also shows the Laws about conservation of Momentum and Energy.
♛【Newtons Cradle】: Newton cradle demonstrates the third law of motion with swinging spheres; when one ball is lifted and released it sends force through the rest, pushing the end ball in the opposite direction; these swinging kinetic balls are perfect addition to your office desk decoration accessories or teaching tool at schools.
♛【Perpetual Motion】: The pendulum balls show the conservation of momentum and energy, creating perpetual motion that is ideal for desktop display. Dimensions: The desk balls pendulum stand measures (L) x (W) x(H) 8.5 x 7 x 9cm / 3.35" x 2.76" x 3.54"
♛【Reliable Quality】: Our newton's cradle desk toy is made with stainless steel bars, the balls have a reflective mirror finish, and the base is a lightweight plastic.
♛【Perfect Gift】: As a creative decompression desk toy to amuse people. Perfect for decorating in the office, home and other indoor places. Can be a funny gift to your friends, family and children.

Specification:
Color: Sliver
Material: ABS + Steel
Ball Diameter: 1cm / 0.39"(appr.)
Ball quantity: 5 Small Balls
Packing: Carton
Size: (L) x (W) x(H) 8.5 x 7 x 9cm / 3.35" x 2.76" x 3.54" (appr.)

Package Included:
1 x Balance Balls Toy

Notice:
Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering.
Please understand that colors may exist chromatic aberration as the different placement of pictures.