About This

• 3 Arrows For Complete Bead Materials, suitable for children over 3 years old.
• This product is designed according to scientific teaching principles.It must be used under professionally trained adult supervision.
• There are 20 label boxes in total.10 big boxes and 10 small boxes. The box material is acrylic. The label material is PVC
• The arrows of each chain are 1/4" wide for the units, 1/2" wide for the multiples, 1/2" wide for squares, and 1" wide for cubes.