Cuboro Junior Wooden Marble Run SetAn amazing starter set for this fabulous wooden marble run system from Cuboro. With 40 marble run pieces and six marbles, there are so many different marble run possibilities and designs, each one with new learning to be gained. The Cuboro Junior Set is a fab Cuboro starter set with 40 wooden marble run pieces and 6 coloured marbles. There is a broad selection of different marble run construction pieces including rails and cubes, so you and your