Wooden birch beads. 800 abacus bead parts. They are the same size as those used in regular abacuses. These are abacus beads from Banshu abacuses, which have the highest abacus production in Japan. How about using them for handmade charms or making Japanese-style accessories? Diameter: Approximately 1.3cm Hole diameter: Approximately 3mm I try to ship as quickly as possible. Thank you.