Wooden birch beads. This is a set of 200 abacus bead parts. They are the same size as those used in standard abacuses. These are abacus beads from Banshu abacuses, which boast the highest abacus production volume in Japan. How about using them for handmade charms or creating Japanese-style accessories? Diameter: Approximately 1.3cm Hole diameter: Approximately 3mm We strive to ship as quickly as possible. Thank you.