K'Nex Creation Zone 50 Model Building Set Features: This building set contains 417 rods and connectors that click together in a multitude of 3D configurations Build up to 50 different structures with the colorful pieces and learn about basic building concepts with this construction educational toy Each set also comes with an easy-to-follow instruction sheet to guide your child in building 50 models of varying difficulty and size! It supports the developmental growth of hand-eye coordination, fine motor skills, problem-solving skills, & spatial awareness Suitable for ages 5+ Specifications: Dimensions: H:35.5 x W:21.5 x D:20.0 cm Guarantee:1 year Material: Plastic/Metal Model Number: KN16511 Self Assembly Required: Yes