[Material] Handmade, international standard 925 sterling silver (handmade electroless plating) 【size】 Inner diameter 18mm Ring measurement method method one: Directly to the Yinlou. Jewelry shop, please ask the clerk to help measure the international size. Method 2: Place your ring on the ruler, measure the diameter inside the ring, and compare the table below. Method three: Use the inelastic thin wire to pull the length of the widest point (joint) of the finger to the tightest circle, and then compare it to the ruler to the inner circumference. (Because the measurement method varies from person to person, the error will be larger.) *Reminder: If your joint is wider than your finger, use the joint size. Indeed. [Please confirm that the size and alphanumeric are correct before ordering, and there is no return for custom products! 】 [If the product is "order", the production will start after payment, and the average waiting time is 14 production days (excluding holidays and delivery time). 】 [The computer display may have a color difference. If you have doubts about the color, please contact the designer. 】 [Because the goods are handmade, there will be traces of hand-made, please accept the order again] [★ Maintenance method] 1. Always wear, body oil can provide protection, so that jewelry is not easy to black. 2. If it is not worn for a long time, it can be wiped with a silver cloth and put into a sealed bag. 3. Do not soak hot springs, sea water and chemicals to avoid sulphurization and blackening. 4. Usually clean it with a toothbrush and toothpaste, then wash it with water and blow it off. 5. If you are worried that the chemical emulsion of silver cloth and copper cloth will cause skin allergies, you can wash it off with water and dry it before wearing it. [Place of Origin / Manufacturing Method] Handmade in Taiwan Your encouragement is the driving force behind our efforts. Thank you very much.