This wallet size case is perfect to store your interchangeable set. It might even be smaller than your wallet for those of you who feel the need to keep every receipt. You have a case already? Where are you storing those extra tips we know you bought? There is space in this case. The case folds in quarters and ties securely. A zip pocket on the side stores your connectors or tools. Features 15 numbered pockets for tips but five additional unnumbered pockets to accommodate sizes 2 through 17. There are four unnumbered pockets for cords. Closed: 4" by 7.25". Open: 15" x 7.25".