Beads Number: 5 Beads Per Row x 13 Rows With Reset ButtonOne bead above and four beads Give concrete visible display of numbers by beadsTool In Mathematics Education BeginnersNon marring anti-skid on the base of the abacus keeps your abacus from sliding around.Both practical and educational.Age Range: 8 years oldFeatures: EducationalGender: Unisexcolor:white + woodMaterial: Wood + plasticWarning: just for teacherUse for: TeacherAbacus : Can Hanging A: Wooden FrameworkAbacus : Plastic BeadsName: Teaching AbacusSize:58 x19 cm / 23 * 8 inchNotice:This kind abacus is just design for Teacher. Can hanging on the Blackboard.Package Contents:1 pcs * abacusOnly 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.