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