Superduos (sometimes written as "SuperDuos" or "Super Duos") are oval-shaped, two-hole glass beads made in the Czech Republic. Each Superduo bead measures 5mm long and about 2.5mm wide at its center. The center of each bead is just slightly wider than its ends. Superduos are available in over 130 colors and designer finishes.
- Related blog post: Are Your Superduos Authentic?