HOT SALE Circular digital bar combined wooden toys children educational toys[commodity name] digital bar digital game box[main material] quality timber[packing] box packaging[package size] about 14 x 23x2.3CM1 the traditional number of rods， a total of 4 color， each color 10-13 root. Mathematical calculus， \"because it is a foreign trade custom， so counting rod number， color， different length]， cob length about 7cm.2 box size is about 23*14CM. The above figure is 0-8 2， + - * / = symbol and number 9 is 1.