Encourage your children's creativity and imagination with the highly stimulating K'NEX 10 Model Building Fun Set! With 126 classic K'NEX pieces, this building toy for ages 7 and up gives children an outlet to learn and enjoy themselves at the same time. The K'NEX building system is composed of colorful plastic rods and connectors that snap together with a simple "click"! These pieces can be combined together to create real working vehicles, moving structures, and just about anything your child can imagine. With 10 building ideas, the included illustrated instructional booklet guides your little engineers in constructing truly amazing creations. The K'NEX 10 Model Building Fun Set also fosters kids' growth by strengthening hand-eye coordination, fine motor skills, problem-solving skills, and spatial awareness. It is proudly made in America and was tested to the strictest quality and safety standards, ensuring that children will enjoy a hassle-free playtime experience. Start them young. Encourage your children's creativity and brain development with the K'NEX 10 Model Building Fun Set today! Age: 7-12 years.