arithmetic abacus, a classic instrument that is still fully functional13 bamboo sticks, with 1 bead up and down 4 beads on each rodGood made plastic frame and beadsA tool for early mathematical Children EducationCan as a classical computer in , educational tool are used for teachers or a gift for abacus collectors Soroban abacus style, ideal for fast calculation.This abacus is encased in a sturdy plastic frame and suspended with bamboo poles.It is a -friendly abacus / soroban, strongly recommended for use in any abacus / Abacus course.Size (L x W x H): 8 x 2.5 x 0.6 inchesMaterial: Plastic Frame and beads, bamboo sticksColor: black frame, colorful beadsPackageContents:1 x AbacusNote:Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3 cm.