Build your own storage case with Fil-Tec's Stackable Thread Case. You can buy the base and lid separately or together as a kit. These interlocking cases can be stacked up to three high, and each level will hold up to 10 spools. Fil-Tec's Stackable Thread Case is durable and made of semi-transparent plastic that allows you to find the thread you need quickly. Please note the thread pictured is not included, and you must purchase extra bases to make the case stackable.