JOYIN 150Pcs Marble Run Premium Toy Set, Construction Building Blocks Toys, STEM Educational Building Block Toy

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Premium marble run set with transparent parts, endless fun for your child to watch marbles run along tracks
Premium quality set!
All tracks are easy to stick together and the set is stable once build up with our professional designed molds
This STEM marble run set comes with an assembly instruction to help kids’ hand-eye coordination. After they learned, they will have ability to build any different tracks by their imagination and logical mind. Perfect Toy Set to develop kids’ creativity, logical thinking, hand-eye coordination. Play and Gain patient and problem-solving ability. Excellent Gifts for all kids
CHILD SAFETY: Meet US Safety Standard, Safety Test Approved, 100% Non-Toxic