Advanced struts add 30 new possible directions for each ball; provide more versatility and complexity;Great for fans of Platonic or Archimidean solids, truncations, ruled surfaces, tetrahedral grids or octet-trusses;These struts are also indispensable to build many structures of interest in Sacred Geometry;Contains 222 precision-made components; a colorful instruction booklet; lifetime manufacturers warranty;Zometool is the construction set that kids and Nobel Prize winners get hooked on
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