THE PHILADELPHIA GROUP-Amazing Science Kits: Pop Rocket. Make your own homemade rocket using a bit of water and the included blast-off tabs. No rocket fuel or fire required! This kit contains one rocket, four blast-off tabs, and an instruction sheet. Recommended for ages 8 and up. WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 years. This set contains chemicals that may be harmful if misused. Adult supervision required. Imported.