The Ring Stretcher and Jewelry Rubber Mallet Set is an essential tool kit for jewelers and DIY enthusiasts, perfect for resizing, reshaping, and repairing rings. This set includes a high-quality expanding ring mandrel and a jewelry rubber mallet. The expanding ring mandrel allows for easy expansion, while the rubber mallet helps reshape deformed rings without causing any damage. This set provides high-performance results for all your jewelry resizing and repair needs. Whether you are a professional jeweler or a hobbyist, this set gives you the tools you need for precision ring making and repair with ease.