These little steel balls will keep you entertained all day
The back and forth motion is a soothing experience you''ll enjoy day after day, learn about the conservation of momentum and energy
5, 5'' Desktop display model is a version of newton''s cradle

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 5.9 inch
Height : 5 inch
Length : 6 inch

Item Weight: 11.2 ounce (View shipping rates and policies)
Shipping Weight: 11.2 ounce (View shipping rates and policies)

ASIN : B00ULXPN80