White Lila Luster (Left version) ZoliDuo - These comma shaped beads are made out of premium Czech pressed glass. ZoliDuos have a flat back, rounded top and two holes. Use these 2-hole beads to add exciting contours in your bead weaving projects. ZoliDuos come in left and right versions that are mirror images of each other to expand their beading design potential. ZoliDuo beads measure 5x8mm and come in a tube of approximately 50.