Sold in 5” plastic tubes – 22.5 – 24 Grams per tube (approximately 340 / 360 beads per tube, depending on the bead finish as some finishes adds more weight to the beads than others).  These Czech Glass Beads are pressed for a uniform shape and size with a tapered design.  The profile of SuperDuo’s is much like an inverted hourglass, tapering at the ends and widening in the middle to create a honeycomb or diamond pattern when stacked together.  Their large hole to bead size ration makes them ideal for consistent bead weaving and multiple thread passes.  Measurement per bead: 5.5mm long, 2.5mm wide (along string), 3.50mm thick with a hole size of 0.8mm