Advantages: These craft bottle caps are treated with baking varnish, making the color bright and consistent, with a smooth and even finish free from lines or color differences. They are durable and resistant to wear. The bottle caps are made of metal, which is sturdy and not easily deformed. The edges have been specially smoothed to prevent scratches. Instruction: Cut the image into a circle, apply glue directly to the bottle cap or on the back of the image, then place the image onto the bottle cap. When used with epoxy stickers, it creates a 3D visual effect. Application: These flat bottle caps are ideal for DIY craft projects. Use them to make necklaces, keychains, refrigerator magnets, scrapbooking embellishments, badges, hair accessories, and more. With their vibrant colors, they are perfect for home and holiday decorations. They are also suitable for classroom craft activities. NOTE: These bottle caps are for decorative crafting only. They do not have a rubber lining and cannot be used as functional bottle seals. Avoid pressing heavy objects on them to prevent deformation. Treatment: Baking Varnish Overall Dimensions: 32 x 6 mm / 1.26 x 0.24 inch (Diameter x Height) Bottom Inner Diameter: 25 mm / 0.98 inch Color: White Material: Metal Package Contents: 160 x Bottle Caps for Crafts Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error is +/- 1-3 cm.