Matte Iris Blue 389-26-21135 Czech 2-Hole Bar Beads - These premium Czech pressed glass beads make great building blocks or spacer beads for your beading designs. The 2-hole bar is a rectangular shaped bead with rounded edges and flat sides. Check out the huge selection of colors and finishes to find the perfect bar bead for your next project. Czech 2 -Hole Bar beads measure 2x6mm and come in a tube of approximately 130.