K'NEX is a construction toy system that consists of interlocking plastic rods and connectors. Designed for children and adults, it allows users to build a variety of structures, vehicles, and models. The pieces come in different shapes and sizes, promoting creativity and engineering skills. K'NEX sets often include instructions for specific projects, but users can also create their own designs. The toy encourages problem-solving and fine motor skills, making it a popular choice for educational purposes. K'NEX has been recognized for its ability to engage users in hands-on learning and imaginative play.