1. Material: wooden 2. Weight: about 60g/set 3. Size: about 12.3x3.5x3 cm/set 4. Applicable age: 6 years old and above 5. Function: exercise spatial thinking ability 6. Features: safe material, fun and interesting. Fine workmanship, no burr, smooth surface. It can exercise children hands-on ability, enhance children learning and hand-eye coordination ability. 7. Description: there are four small three-dimensional squares in the wooden frame, each of which has six sides of different colors. Put the four small wooden blocks together so that they do not repeat the color no matter which side they are viewed from
