The Jewel Tool Sizes 1-15 Ring Sizing 29 Piece Wide Band Set is an essential tool for any jeweler or DIY enthusiast. This set includes half sizes for precision sizing and consists of 29 chrome plated stainless steel bands, each measuring 3mm in width. The chrome plating provides excellent rust resistance, ensuring that your tools will last for years to come. These bands are designed to be used with a ring mandrel to accurately measure and size rings. The wide band design provides a sturdy and stable platform for measuring, ensuring that you get accurate and consistent results every time. The set comes in a convenient storage case, making it easy to keep your bands organized and accessible. With this set, you'll have everything you need to resize rings for yourself or your customers. The wide range of sizes makes it easy to find the perfect fit, and the half sizes ensure that you can get an even more precise fit. Whether you're a professional jeweler or a DIY enthusiast, this set is a must-have for your toolkit.