Product information:

Product material: copy pen is birch, other parts are beech
Product elements include:
Operation panel 1pcs
Numbers 1-20
Signs plus, minus, equals
Copy pen 1pcs
20pcs each of three-color operation wooden beads
Operation panel: 39.7 * 22.7 * 1.5 cm
Number and symbol blocks: 4.7 * 4.7 * 1.5 cm
Pro pen: length 8. 7cm diameter 1. 2cm
Operation wooden beads: diameter 1. 5cm

Packing list:

Building block operation toy*1