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Individual Package – All accessories are packed in independent bags which is easier for everyone to understand. In the meantime the package comes with easy-to-understand instructions. It is easy for anyone to understand and assemble. Cool Model Toy for Kids – Excellent gifts for all children to build imagination and logical mind different ball track. Perfect toy set for developing children’s creativity logical thinking and hand-eye coordination. Creativity and STEM Learning – This technology marble run model kit looks stunning on display simulation of a real roller coaster. Experience a fascinating architectural experience with the technical model kit. Technology Kit for Building Toy Lovers – Our marble roller coaster toy is stable exquisite appearance. Help promote children’s imagination and creativity hand-eye coordination and self-confidence. Mould King building block sets for kids – Gift Box Packing is a beautiful gift for kids for birthday children’s day Christmas New Year. p Technology Roller Coasters Kit /b – SPECIFICATION: /b – Number of stones: 3238 PCS – Service: Free spare parts – What you get: – 1x Module – 1x Instruction Manual – 1x Li-ion battery 400mAh in the core box – 2 x L Motor /p