Features Material: K9 Crystal Size: 15mm/0.59“, 18mm/0.71, 20mm/0.8, easy to carry Can be used as children intelligence development toy or art decoration. Package Included 3*cube prism
YOKIOU RGB Cube Prism, 15/18/20mm Dispersion Prism Optical Glass X-Cube for Physics Teach
$17.09
Features Material: K9 Crystal Size: 15mm/0.59“, 18mm/0.71, 20mm/0.8, easy to carry Can be used as children intelligence development toy or art dec…
5 in stock
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