【Ring Bender Tool】The ring making machine provides nylon molds, allowing you to bend without damaging the delicate material. The sizing tool is also very practical and accurate to ensure your ring is the perfect size 【Durable Material】The ring bender is made of solid steel that has been hardened to 45-50 HRC. Each steel pin and die is black oxidized 【Versatility】This bending kit is perfect for home crafts, jewelry shops, DIY projects and repairs, jewelry making ring bending machine novices and enthusiasts. Molds are available in different sizes to suit different ring and earring designs 【Multi-Function】Includes molds in various sizes - 12mm, 14mm, 16mm, 20mm, 22mm; angles are 60 degrees and 90 degrees. These options provide flexibility for different designs 【Precision Made】Regarding the hardness of the metal, we recommend this ring maker for soft or light metals less than 3mm thick. You can also use this machine to make spoon rings