A clever 2-piece jet-valve connects a CD to a balloon for a hands-on physics lesson! As the air is released it creates a hover '.cushion' beneath the cd, as well as a propulsion to drive it across any smooth surface. A pack of two to build and race! Also includes spare balloons. Box size 120 x 133 x 22mm
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This item ships from and is sold by Fishpond World Ltd.