●【Innovative Multifunctional STEM Toy】Upgraded plum-shaped blocks with holes unleash multidimensional creativity and imagination for children. Equipped wheels transform into movable vehicle models, while through-holes serve as connectors or rotating shafts, bringing endless construction joy to kids over 4 years old. ●【STEM Education through Play】This set enables the construction of various creative 2D, 3D numbers, letters, shapes, and complex building models. It enhances childrens hands-on engagement, imagination, creative thinking, problem-solving abilities, focus, and cooperative play, offering a super-fun way to explore architecture, engineering, physics, and mathematics ●【Compatible and Expandable Complete Set】Includes 220 pieces of plum-shaped blocks with holes that are compatible with traditional blocks of the same size (1.18”).100 colorful pieces, 20 transparent connectors, and 8 wheels, perfectly integrating with existing block collections for expanded play. ●【Safe Material and Design】Crafted from BPA-free, durable new PP plastic material that meets US toy safety standards. With a standard safety size design, the 1.18-inch colorful star builders are easy to clip and connect tightly, ensuring a safe play environment. ●【Ideal STEM Toy Gift for Kids】A versatile build-and-play set with a storage box for construction and engineering enthusiasts. Detailed instructions showcase various creative models, making it an ideal STEM educational tool and Montessori learning material for children aged 4+, perfect as a birthday gift for Christmas, Thanksgiving, and the holiday season.