Designed for DIY crafting, this wind-up mechanism is compatible with materials like pearl clay and snowflake mud, allowing users to create hopping or walking robot. Its user-friendly design makes assembly simple, while the clockwork movement adds an interactive element to handmade toys, fostering creativity and problem-solving skills. Features -Color:White -Material:Plastic,metal -Size:4.50X4.50X3.50cm/1.77X1.77X1.38in -Encourages imaginative play: transform simple materials into dynamic toys with this windup mechanism, fostering imaginative play and creative problemsolving skills - use: powered by a clockwork design, this mechanism offers a easy alternative to batteryoperated toys -suit for diy robot: create legged robot or other moving crafts with this versatile mechanism, making it an excellent tool for stem projects and creative workshops -Fun for all ages: suitable for kids and adults, this diy kit provides a fun and educational activity that brings families and friends together for quality time -Wide application: compatible with clay, pearl mud, and other crafting materials, this mechanism is ideal for creating a variety of toys, from jumping robot to walking animals Package list: 75 x Wind up Toy Mechanisms