7-Digit Brown Beads Soroban Abacus Kids Math Teaching Toy Arithmetic Tool | |
Description: style abacus, great for rapid calculation, highly recommended for use in any math abacus / course. Size Chart: L x W x H: Approx 10.5 x 6.5 x 1.5cm/4.13 x 2.56 x 0.59inch Package Includes: 1 Abacus |