30 Cylinders 1/4" diameter x 1" long and 12 Steel Balls 1/2" diameter (non-magnetic) Material: Neodymium (NdFeB) Grade: N48 Coating: Nickel (Ni) SKU# SKU9330 The parts of this can be assembled into the pictured icosahedron. The icosahedron has 12 polyhedron vertices (the steel balls), 30 polyhedron edges (the magnet rods), and 20 equivalent equilateral triangle faces.
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