5MM 216 Magentic Balls Children Kids Building Block Noctilucent Discoloration Buckyballs Entertainment Education Decompression Neocube Toys

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Fluorescent green magnetic ball glows at night after absorbing ultraviolet light, and the color changing magnetic ball changes color under ultraviolet light Made of unique material, no rust and wear resistance, smooth surface and no fade. They are magnetic ball bearings that you can make in different shapes or objects. This is an amazing intellectual toy, amusing and pleasant fun. It can improve kids hand-on ability.

Description: Product Category: Magnetic Cube Color: fluorescent green ，Discoloration Specifications: 5MM,3MM Package include: 216/1000*Magnetic balls Note: 1-2mm signal might exist due to manual measurements (note: 1cm=0.39inch), please kindly understand. The colors of might differ due to different monitor settings.