Flat bottle caps are applied to crafts, scrapbooking, hair accessories, pendants, earrings, and many other DIY projects. Great for art class projects, holiday decorations, and birthday party fun. Specification Color: Yellow Material: Metal Surface Treatment: Baking Varnish Overall Dimensions: 33 x 3.3 mm 0.13 x 1.3 inch (Dia H) Bottom Inner Diameter: 25.4 mm 1 inch Packing List: 50pcs x Double-Sided Colorful Craft Bottle Caps Advantages 1. Bottle caps are made of metal material, the bottle caps are pressed flat, painted on both sides, and have smooth edges, perfect for DIY projects. 2. Concave and convex round Flat Bottle Caps, positioning the image on the bottle cap can create a 3D look. Instruction Flattened bottle caps can be used with clear resin stickers to embed photos or other small objects as decorations such as pendants. NOTE: These bottle crown caps are for craft use only, have no rubber lining inside, and are not intended to be used as bottle sealing caps.NOTE: These bottle crown caps are for craft use only, have no rubber lining inside, and are not intended to be used as bottle sealing caps. Application: Flat bottle caps are applied to crafts, scrapbooking, hair accessories, pendants, earrings, and many other DIY projects. Great for art class projects, holiday decorations, and birthday party fun. Instruction: Flattened bottle caps can be used with clear resin stickers to embed photos or other small objects as decorations such as pendants. Advantages: 1. Bottle caps are made of metal material, the bottle caps are pressed flat, painted on both sides, and have smooth edges, perfect for DIY projects. 2. Concave and convex round Flat Bottle Caps, positioning the image on the bottle cap can create a 3D look. Color: Yellow Material: Metal Surface Treatment: Baking Varnish Overall Dimensions: 33 x 3.3 mm 0.13 x 1.3 inch (Dia H) Bottom Inner Diameter: 25.4 mm 1 inch Packing List: 50pcs x Double-Sided Colorful Craft Bottle Caps.