• Easy to assemble metal water rocket launcher with a 125 PSI safety valve. Rocket will NOT fly straight without an aerodynamic nose cone made from a second soda bottle and use only 1 cup (200 ml) of water.
• Kit includes our Gen 4 StratoLauncher StratoFins (screw-on water rocket fins) fill funnel. Watch assembly video on this listing at the end of the pictures.
• StratoLauncher IV will propel a 2 liter plastic (PET) soda pop bottle over 350 ft. in the sky. Watch the last minute of the assembly video for launch procedure.
• Supports most .5L, 1L, 1.25L, 1.5L, 2L soda bottles @ air pressures as low as 15 PSI up to 120 PSI.
• Kit is fully upgradeable, expandable, & can be accessorized into a complete launching system for STEM.