All construction elements in this extensive set can be connected intuitively and it takes only a few pieces to create many exciting structures. The pieces offer endless possibilities - roll them, stack them, connect them, rotate them, push or pull them, lower or lift them and much much more. All elements of the different sets are fully compatible. Only high quality and tested plastic materials are used. All elements are easy to clean, ideal for schools, nurseries and play groups. 424 piece set including geometric parts (squares, cubes, quadrants, angles, rectangles, triangles, ladders), connectors (inner, outer, cross, clip links, turn elements, couplers), axles and wheels, cover plates, figures, big wheels and detailed construction manuals. Supplied in a clear Gratnells storage tray with lid. Ideal for 1 to 12 children.