1. Made of metal, resistant to play and drop, not easy to be broken
2. Can be used as home furnishings after assembly
3. DIY assembly, stimulate logical thinking, improve children hands and brain ability
4. Parent-child interaction, exercise hands-on ability
5. Wind up the clockwork, mechanical linkage glide, twist the clockwork, trigger the switch to linkage glide
6. Smooth edge does not hurt the hand, precise structure
7. Material: stainless steel