The SkyLab Water Rocket / Pop Bottle Rocket Only comes with all the precision finished components shown above. It does not include a launcher, guide rod or red visibility marker.
Get it as a spare rocket or get many of them for a group activity. You will need to provide a 2-liter plastic pop bottle and an air pump of your own, or you can get an exceptionally
good quality bottle and pump from the AntiGravity web store.