4M Science In Action Water Rocket This fun water rocket can be assembled by your child all by themselves. This 4M Science In Action water rocket can be made using a bottle, water and a pump. Of course with detailed instructions. The dimensions of the box are 29 by 22 by 10.5 cm. Suitable for children aged 14 and over. Contents: 1 plastic bottle (rocket body), 4 fins, 1 fin holder, 1 stopper, 1 stopper connector, 1 pump connector, 1 plastic hose extension and detailed instructions.