Originally Posted by kalutika
That does not sound like sand.
He does it near the top because that's where the sound seems to be coming from.
You said that this was your experience with around 10 different KMs you have checked for this on?
i have used about 10 different KMs but no i havent checked for this on all of them, i have noticed this on some stems that i have personally cleaned myself for my friends when smoking, but nothing like in the video.
EDIT..on my tri-metal KM, when i flip the stem upside down, then right side up, like a hour glass, i hear little a little tiny pieces of metal and tiny tiny particles falling down the stem. most likely from when the workers at the factory were spot welding the three metals on the stem.
i have personally owned 2, both of which i just got actually because i like them so much lol...
i might be wrong about the whole jingle thing as other people have said that pieces of metal may fall in when welding, which makes perfect sense. and some hookahs have this and some dont...