Newton’s Cradle Balance Balls ( Case of 4 )

Case of: 4
Colors: transparent, silver
Materials: metal, plastic
Every action has an equal but opposite reaction – right before your very eyes with this fascinating Newton’s Cradle Balance Balls Set. Science is demonstrated clearly and simply with a touch of amusement with this balance balls set featuring five metal balls suspended by invisible wire in a metal frame. Lift a ball, let it go and watch the ball on the opposite end move. Great for desks or home display. Measures approximately 4.5″ x 4.25″. Comes packaged in an individual box.