1. Material: Wooden 2. Weight: about 260g/set 3. Size: wooden box about 15x5.9x5.2 cm 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 and learning ability. 7. Contains: wooden stick x 21, wooden box x 1