XL Thread Storage Boxes (Set of 4)Organize all of your spools and mini cones easily with the XL Thread Storage Boxes from Koala Studios, designed as a perfect mini cone thread organizer. The set includes four boxes, each suitable for up to 30 mini cones, wide spools, or any spool up to 2. 75 inches (70 mm) in height. The boxes are stackable for excellent storage and have spindles to hold spools in place securely, making them an ideal solution for those looking to keep their mini cone