Check the listing for details. 20Pcs 12mm Stainless Steel Flat Round Adjustable Finger Ring Base, Silver Tone. Condition: New. Listed at 18.84 USD. What is this?These stainless steel blank rings are great for jewelry making, designed to set resin, stones, crystals, photos, and more. Suitable for creating personalized gifts for holidays like Christmas, Valentine's, and birthdays for family, friends, or yourself.What will I get?Packing List: 20 Pcs Stainless Steel Ring BlanksColor: Silver ToneMaterial: Stainless SteelTray Inner Diameter: 12 mm/0.47 inchRing Width: 18 mm/0.71 inchAre there any advantages of the product?Reliable Material: Made of rust-proof, lightweight copper with a smooth surface and comfortable finish that is gentle on the skin.Adjustable Design: A one-size-fits-most, adjustable ring base with a secure setting bezel tray to hold and protect your creative decorations.