The clockwork mechanism is ideal for DIY enthusiasts looking to create unique toys or robot crafts. Its compact design fits seamlessly into various projects, including clay models and novelty jumping robot. The mechanism provides reliable movement, making it suitable for educational purposes and imaginative play scenarios. Features -Color:White -Material:Plastic,metal -Size:4.50X4.50X3.50cm/1.77X1.77X1.38in -learning tool: this clockwork mechanism inspires children to learn through play, developing their imagination, creativity, and engineering skills in a fun and engaging way -No batteries required: operates entirely on a windup mechanism, eliminating the need for batteries, solution for toy crafting -Interactive diy kit: suit for creating hopping or walking robot, this kit provides a rewarding diy experience that enhances dexterity and encourages innovative thinking -Great for group activities: whether for school workshops or party favors, this kit is a choice for group crafting sessions, promoting social interaction and teamwork -Versatile mechanism design: compatible with various diy materials, this mechanism can be used to craft robot, animals, or other creative toys, making it a musthave for hobbyists Package list: 15 x Wind up Toy Mechanisms