Nanodots GYRO DUO: Magnetically Gyroscopic Balls from ThinkGeek
http://www.thinkgeek.com/18ae?cpg=yt
-Two balls with self-orienting magnets inside are the coolest, magnet-iest, desk fidget toy ever!
-Display them, play with them, use them to move other magnets, build things (by combining sets), and have fun playing with these magnetic balls.
-Two magnet proxies are included. These are balls with just a magnet inside, which aren't as awesome as Nanodot GYROs, but help you build structures.
-Magnets:
-Nanodots GYRO: 4 x Neodymium-Iron-Boron magnets.
-Magnet Proxies: Encased ferrite magnets.
-Includes: 2 Nanodots GYRO balls, 2 magnetic proxies, and wood display base.
-Dimensions:
-Nanodots GYRO: 42mm diameter (approx. 1.7")
-Wood Display Base: approx. 3.2" x 4.7" x 0.7"
This video was shot by Nano Magnetics.
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