Our GBC 23 Color Sorter is coming along quite nicely! After being sorted the balls are stored in 2 trays each holding up to 5 balls.
Learn more: https://pv-productions.com/product/lego-gbc-23-ball-color-sorter-module-31313-or-45544-building-instructions/
GBC 23 – 31313 or 45544 C Model