The OESD Snappy Stacker is the perfect portable, expandable, and stylish storage solution! Use it for your thread, notions, sewing machine feet, and so much more. The expandable design allows you to purchase more than one set and stack them for your needs. Two sets can create one set of four with an extra top, or a set of three, and a single for easy transport or storage. One Snappy Stacker included 2 trays and 1 lid. Holds 20 thread spools. (Thread not included.)