Material: Ring mandrel, This high-quality ring size is made of stainless steel and is enough to put the ring around and work well. Rings can be easily enlarged Ring measurement tool,Perfect for making rings and jewellery. Rings can be easily enlarged. Easy to use, economical and practical jewellery tool. Suitable for any jewelry store or personal use Application: Ring maker tool, Perfect for ring shaping and jewelry making. Easy to use, economical and practical. A simple strike with a raw leather hammer at the end of the tool spreads the outer mandrel and stretches the ring Customer Service: Ring stretcher, If you have any questions, please contact us, we will give you the answer within less time Ring stretcher tool,International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions