This model kit is for science projects and classroom demonstrations. It provides a practical example of how belts work, making it easier for children to grasp complex engineering concepts. The kit includes all the necessary materials, ensuring that kids have everything they need to complete their project. Features -Color:Beige -Material:Wood -Size:20.00X6.50X5.20cm/7.86X2.55X2.04in -Stem education : this diy engineering model promotes by engaging children in science, technology, engineering, and math activities. -Patience and precision: building the model helps children develop patience and precision, crucial for their cognitive and motor skills. -Realworld engineering: the belt elevator model introduces kids to realworld engineering concepts in a fun and accessible way. -Comprehensive diy kit: the kit comes with all required materials, making it easy for children to start their project without extra supplies. -Family and classroom use: suitable for both home and classroom environments, it supports interactive learning and strengthens parentchild relationships. Package list: 4 Sets model