Wooden birch beads. This is a set of 50 abacus bead parts. They are the same size as those used in standard abacuses. These are abacus beads from Banshu abacuses, which are the number one abacus producers in Japan. How about using them for handmade charms or making Japanese-style accessories? Diameter: Approximately 1.3cm Hole diameter: Approximately 3mm I will do my best to ship them as quickly as possible. Thank you.