Fun Central AY974 1 Piece Light Up Newton's Cradle, Newton Cradle Balance Balls, Scientific LED Ball Cradle
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EDUCATIONAL ITEM: Excellent educational & science gadget, own your very own piece of scientific history and explore significant values of physics.SIZE: THIS Newton's Cradle Ball measures about 4 x 6 x 7 inches.
BATTERIES: 6 AA batteries are required but not included.
PACK INCLUDES: Each pack includes one set of this LED Light Up Cradle Ball.
MANUFACTURING: This Ball Cradle is environmentally friendly, non-toxic and is designed to last for a long time. Easy to use and absolutely amazing Newton's Cradle Balls.