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Great Gizmos offer a very large range of inspirational, inspiring, creative, imaginative, fun and educational toys. The Science in Action Water Rocket kit is new to Great Gizmos this year. Create your own rocket using only a bottle, water and a pump. See how the rocket flies as you pump gas into action. It can reach an amazing height of up to 10 metres. This Water Rocket kit is not only educational but will also give you hours and hours of fun and entertainment. Great for long hot summers days. Ideal birthday gift.