Clover's Stack 'n Store Bobbin Tower is a quick and easy way to keep your bobbins organized. The Tower features six flexible silicone laters that allow you to store a variety of bobbins. Each layer holds five bobbins, allowing you to keep up to thirty bobbins ready to go! The Stack 'n Store Bobbin Tower stands 3-1/2" tall and 2-1/2" in diameter, making it easy to stash in a bag for taking along to quilting retreats or sewing classes. Includes six bobbin wheels and one stand. Please Note: Some uncommon-sized bobbins may not fit in the Stack 'n Store.