Superduos - Super Duo Seed Beads -- similar to 2-hole 'twin beads', SuperDuos are made by a top quality Czech Republic glass manufacturer. Made for exact precision pieces. Use as a connector or as a main material to work any beautiful beading project. Two-hole Super Duo beads are created in the same fashion that pressed beads have been made for hundreds of years. Canes of Bohemian glass rods are heated and then pressed with molds to create uniform beads with soft pillow-like edges. Super Duo beads measure 2mm on the edges and rise in the center with an overall length of 5mm. The .8mm hole edges are not sharp and are gentle on the thread. 2.5mm x 5mm. In Need of Precision Seed Beads? Don't forget to check our Delica Seed Beads | Delicas as well.