Classic Pieces: This set comes with 863 classic K’NEX rods and connectors. These pieces can be attached to one another in different ways. It allows your children to create a multitude of shapes, figures, and structures with ease. The snap fit pieces stick together securely and can be easily reassembled into other creations.

Massive K'NEX set for open-ended building

CLASSIC PIECES – This set comes with 705 classic K’NEX parts and pieces. These rods and connectors all attach to one another in different ways, allowing kids to create a multitude of shapes, figures, and models with ease. The snap fit pieces stick together securely and can be easily reassembled into other creations

408 PIECES - Get ready for the ultimate creative challenge! This 408 piece K'NEX set includes a massive assortment of both classic and micro rods and connectors, giving kids the tools to build an incredible variety of models from vehicles and bridges to rockets, animals, and more! The snap-fit pieces stick together securely and can be easily reassembled into other creations.

BUILD IT: Build an authentic replica of the Golden Gate Bridge that stretches over 40' long!

522 PIECES – This set comes with 522 classic and micro K'NEX parts and pieces that 'click' together, allowing kids to create anything that they can imagine. It includes rods and connectors that are attached to one another in different ways, allowing kids to unleash their creativity and skills in designing a variety of shapes, figures, and models. The snap-fit pieces stick together securely and can be easily reassembled into other creations.