Product Introduction: The size is 18.5x8.7x3.9in.The package includes original packaging and a paper manual.Brand Image:Mould King's model has a strong clamping force and is easy to assemble. It integrates science, technology, mechanical engineering and mathematics, exercising spatial imagination, innovation and logical thinking skills. It is an excellent STEM block toy.It's a perfect present gift for various celebrations. Such as New Year's Day, Valentine's Day, Children's Day, Christmas.After-sale Service: If parts are missing, please circle them in the manual and indicate the quantity, then contact us and we will send you the missing parts. Thank you in advance.