Tubelet Beads Crystal. Produced in the Czech Republic exclusively for The Potomac Bead Company, the Tubelet bead is made from high-quality pressed Czech glass. The Tubelet bead is a tubular shaped cylinder with a thick wall and smooth, round edges that help prevent the bead from snapping or cutting thread. The Tubelet bead is great for edging, filling spaces, creating bezels and much more. Let your imagination soar with all the possibilities open to you with this bead. Beads are 6x2.8mm and come in 8g tubes containing approximately 95 beads.