LED Newtons Cradle Balance Balls Item NO.: 2213189

Product Advantage---Glowing Newton ball swing more dazzling at night, the base has a luminous plate, projected onto the glass beads, glass beads showing colorful, very attractive.

Easy to Use---This Newton's cradle balance ball toy is a good practice of physics in action demonstrates the principles of kinetic energy and conservation of momentum. Pull one or more of the balls, release them and the same number of balls will swing on the other side.
High Quality---Made of glass, which is environmentally friendly, safe and non-toxic, wear-resistant and corrosion-resistant, not easy to damage, and can be used for a long time

Product Feature---When feeling tired of studying and working, you can stir balls to hear the clinking sound to ease. Suit for both kids and adults, excellent for killing boring time and stress release.

Material:Glass + fishing line + plastic base
Color: As the picture show
Size:S(9*12*12cm)/ M(11.5*15*15cm)