Endless Fun: Get ready for hours of entertainment with the Galt Mini Marble Run construction kit. Perfect Gift: The ideal toy for 5-10 year olds and even adults who love a gadget or desk toys. Inspire Creativity: Design and build unique runs with the 40-piece kit and 7 balls. Educational Fun: Introduce kids to STEM concepts with this engaging and fun toy. Durable Design: Made from sturdy plastic, this marble run set is built to last.