If you have two or more flowlights in a tube - as in flowstaffs and flowchucks - you will need to attach the opposite ends of the flowlight to each other for the lights to fit in the tube. This also helps with sliding them in and out of the tubes.
Be sure to click them together and apart sideways (laterally as shown in the video), not up and down in the direction of the pivot (vertically), as this can cause some splitting at the seam and weaken the connection.
If you have any questions, please feel free to contact us!