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Use this simple device to demonstrate gravitational force, center of gravity, and force equilibrium. By perfectly distributing the bird's weight on the tips of its wings and placing its mass near the tip of its beak, the bird's equilibrium is stabilized. Balance the bird on your fingertip, the included pyramid, or the top of a pen! Comes in our choice of assorted colors. Size, 6 x 6 x 2-1/2"; wt, 0.1 lb.
If for any reason you are not satisfied with this item, it is eligible for a return, exchange, refund, or credit up to 180 days from date of purchase. Restrictions may apply. Returns & Exchanges Policy.