So i got a pipe today.....Old one broke...... But the store was going out of business, so besides a sale, the guy threw in some glass beads for free. I assumed they could be glued on for decoration, but then he said ... "these things are virtually indestructible as long as you remember they are in there when your tap out the pipe" So now im' completely lost. Without tryign the pipe yet, i threw in the beads to see if maybe they act like a screen. Looks like complete blockage of the airway. Maybe you mix in with the "tobacco". 5 years and i've never once heard of beads...and since it was a man selling it to another man, i really don't think they are for decoration. Any knowledge of this would be great.