Description: Ancient Style: Calculator Counting Collection for Children Adult Wooden Material: Wooden Abacus Chinese Calculator is made of high quality wooden material, very durable Exquisite Workmanship: Retro metal sheet wrapped corners and edges, exquisite, classical and elegant Classic Chinese Design: two beads on each rod in the upper deck and five beads each in the bottom, The beads are usually rounded and made of a polished artificial stone beads Calculation Tool: Arithmetic Abacus for school elementary math teaching aids and Kids addition and subtraction counting Specification: Material: Wood Size Chart: (optional) 13 Column Black Size: 36x15.8x2.6cm/14.17x6.22x1.02inch 17 Column Black Size: 46x15.8x2.6cm/18.11x6.22x1.02inch 13 Column Brown Size: 37x15.5x2.6cm/14.57x6.10x1.02inch 15 Column Brown Size: 41.5x15.5x2.6cm/16.34x6.10x1.02inch 17 Column Brown Size: 46x15.8x2.6cm/18.11x6.22x1.02inch Package Includes: 1 Piece Abacus Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!