Marble Run Track Building Blocks Kit

SAFEST&DURABLE MATERIAL: Each building block is made of Non-toxic, BPA-Safe, Lead-Safe, Phthalates-Safe ABS material, Conform to ASTM F963-17 US safety standards. Smooth edges & reasonable designed size to avoid scratching hands and choking problems.

COMPATIBLE BUILDING BRICKS: Totally 43-336 Pcs large building bricks are packed in an exquisite color package. which are 100% compatible with all major building blocks. Allow kids with their imagination and creativity to DIY various models  Inside come with detailed instruction.

STEM EDUCATION LEARNING TOY: This stem marble run building block is a perfectly designed toy kit that Inspires toddlers’ imagination and creativity to build a creative magical roller coaster fun set and another fun model, Well build kids' motor skills, hand-eye coordination, and patience. Building + Race Track, which could keep children entertained for hours.

PROMOTE FAMILY INTERACTION: Our creative marble run blocks toy set is great for kids and family members to collaborate together, which can strengthen the emotional communication between the child and family and reduce children’s dependence on parents. Also, let kids no longer indulge in electronic games. Get these STEM classic big blocks toys for your kids to help them lay the foundation for a better future.

GREAT BIRTHDAY FESTIVAL GIFTS: This stem brick set is a perfectly designed toy kit that Inspires toddlers’ imagination, Well build kids' motor skills, hand-eye coordination, and patience. 2 in 1 building + play design could keep a child entertained for hours without tiredness 

COMPATIBLE WITH LEGO DUPLO: Extend the building fun with existing Duplo blocks, and create a greater kingdom!