Two-piece set ◎ New Soroban 23 digits Wooden One-touch Abacus Banshu craftwork Soroban Soroban Birch beads Kabatama Perfect for soroban classes No price reduction. Immediate purchase welcome! With a dedicated hard case Ono City, Hyogo Prefecture Traditional craft Banshu Soroban High-grade birch beads How about for soroban classes? If you purchase this soroban, you can aim for a dan rank and you won't need to buy another one. There are multiple items available, so please comment if you'd like one.