• Compatible with 95% of all available launchers either homemade or commercially available.
• Works with various styles: cable ties, rubber stopper, expanding tube, nozzle, or O-ring.
• No tools or glue required for assembly, simply screw-on to a 2 liter soda bottle or smaller.
• Take your water rocketry to the next level of higher flights with screw-on StratoFins.
• StratoFins kit includes 1 attachment ring and 3 fins along with an instruction sheet.