Metallic Blue Rainbow Iris 25mm 1" Extra Long Silver Lined Bugle Beads Czech Glass High quality, Czech 25mm glass bugle beads. Bugle beads are small tubes of glass. For stringing, woven work or in bead fringe. Use with nymo thread sizes D, B and size 10 or 12 English beading needles. Beads are packed loose, ready to use. Approximate pack specifications: 1.3 ounces: 100+ beads.