Balance Balls are classic desk toys; Also known as Newton's Cradle; the clacking of the steel balls will keep you entertained throughout the day; Pull back one or more of the balls， release them and the same number of balls will swing up on the opposite; Shipped fully assembled in specially designed packaging to ensure that the cradle arrives in perfect condition; Slight defects， We continuously improve the welding quality of the bracket.
Dimensions: 6.30 in x 3.15 in x 3.94 in (16.0 cm x 8.0 cm x 10.0 cm) Weight: 16.58 oz (470 g)