Beads Number: 5 Beads Per Row x 13 Rows With Reset Button One bead above and four beads Give concrete visible display of numbers by beads Tool In Mathematics Education Beginners Non marring anti-skid on the base of the abacus keeps your abacus from sliding around. Both practical and educational. Age Range: 8 years old Features: Educational Gender: Unisex color:white + wood Material: Wood + plastic Warning: just for teacher Use for: Teacher Abacus : Can Hanging A: Wooden Framework Abacus : Plastic Beads Name: Teaching Abacus Size:58 x19 cm / 23 * 8 inch Notice:This kind abacus is just design for Teacher.Can hanging on the Blackboard. Package Contents: 1 pcs * abacus Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3cm.