szzijia 15 Digits Column Abacus Soroban Arithmetic Math School Learning Aid Tool
$9.99
Description
15 Digit Column Abacus.Soroban style abacus, great for rapid calculation.It is a user-friendly abacus / soroban which is highly recommended for use in any math abacus / soroban course.Material: Plastic frame and beads, bamboo rods
