Connetix Magnetic Tiles Square Set 40-Piece. The 40-piece expansion set is a fantastic way to enhance your existing collection. With this set, you can further increase the fun of Connetix Magnetic Tiles and expand the possibilities for creative and educational play. This set includes standard squares in various colors as well as large squares in green and orange. It is the perfect expansion pack for creating larger Connetix Magnetic Tiles creations. The expansion pack works as a standalone starter set, ideal for gaining confidence and familiarity with playing with magnetic tiles, or as an addition to other sets. It helps to build larger towers and walls, bigger rockets, larger houses and parking lots, longer roads, expansive marble runs, patterns, and anything else you want to create.