Wire cubes in primary colors consisting of 1 blue, 1 green, 1 yellow and 1 red making a set of 4 cubes. No tools are necessary when you assemble the system. Made from steel wire and heavy duty plastic connectors. Cubes are interlocking giving you multiple stacking options so let your imagination take over.Product Number: 6256-978. Product Dimensions: 14.25x14.5x14.5 Inches. Fun colors for young children. See thru wire cubes. Assemble In Different Formations. Easy Assembly.