Kawagoe design Kawagoe_Accessory . Material 925 sterling silver . Ring material width 4.5mm / thickness 2mm . Please note the size of the ring after placing the order (according to the international ring) Handmade, error ± 0.5mm is the normal range . Ring measurement method: 1. Take out the ring you usually wear, measure the inner diameter of the ring, and pick your size from the international ring table. 2. Use a tape measure to measure around the finger (take the value of tension) 3. Purchase the international ring circle to measure by yourself or to the nearby silver building, jewelry counter, please ask the clerk to help use the international ring circle measurement . If you are still unsure, you can also tell us the size directly by private message, and we will help you pick the right ring. https://farm5.staticflickr.com/4617/39723728041_0825eccdae_z.jpg . If your ring is not within our size range, you need to add the ''Rings of other sizes of the ring'' in the design hall to purchase the size materials. . The items are handmade, may not be perfectly symmetrical, and will not have the exact same style, but each one is unique. . Our products are ordered by order, and we only start production after payment. It takes an average of 7-10 working days, excluding holidays and delivery time. . If you are in urgent need, please leave a message to us when you pay, we will try our best to help you.