•	If one steel ball is lifted and allowed to fall back onto the row, the ball at the other end will swing out.
•	With two dropped at one end, two swing out.
•	A classic desk ornament, as well as a fun look Newton's Law of Reaction...!
•	Approximate Size: 11 cm

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Editorial Reviews:

Product Description
If one steel ball is lifted and allowed to fall back onto the row, the ball at the other end will swing out. With two dropped at one end, two swing out. A classic desk ornament, as well as a fun look Newton's Law of Reaction...! Approximate Size: 11 cm

Customer Reviews:

4 out of 5 stars

It's O.K October 5, 2008
Mr P I Staker (England, U.K)
2 out of 2 found this review helpful

I've always wanted one of these and now I've got one. I have to say it's quite small, small enough to fit in the palm of your hand. That might be a good thing for some people but I'd prefere something a little bigger. It also only lasts for about 20 seconds when you put it into motion. But its fun to see which combinations of ticks you can make. (its a little hard to explain, but if you buy it you'll know)