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Ultra PRO: Block Building Base
A more simple solution for OYO and LEGO storage and display, the Ultra PRO Black Building Base has a familiar green color and comes in packs of four. Although it does not offer any cover, the larger size and square shape makes it easier to organize larger collections
• 10 x 10-inch Block Building Base
• 4 pieces per pack
• 10 x 10-inch Block Building Base
• 4 pieces per pack