JOYIN 207pcs Marble Run Premium Toy Set Construction Building Blocks Toys Stem Educational Building Block Toy147 Plastic Pieces + 60 Glass Marbles

Marble Runs by JOYIN. Details: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.