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ERYUE RGB Optical Glass Prism, Prism, K9 Crystal Teaching Tool Children, Beautiful Design with Colorful Light Rendering From Different Angles, 15x15x15mm (ERYUEh6t89xrd0m-11)
ERYUE Optical Glass Prism, Beautiful Physics Teaching Children, K9 Glass Material for Science Class (15 * 15 * 87)
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Triangular Prism K9 Optical Glass, RGB Prism for Teaching Tool and Decoration, High Refraction Crystal Prism with Red Green Blue Light Effects, Unique Gift for Kids and Science Ent (20 * 20 * 20)
