The classic desk toy. Using Newton's third law has never been this much fun! Swing one ball and one ball on opposite ends swings in response. What happens when you swing two? Size 5 -1/2".
In Stock: 20 · For in-store inquiries, use PLU 126199
cardboard radio and ipod speaker
desk gear clock
light up newton's cradle
newton's cradle, black base
pop quiz clock
spooled: cord and earbud storage
the orginal drinking bird
the original reversible magnetic sand timer
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