Material:Our pet ID tags are made from hardened aluminium with bright colour. Size:38MM,bone shaped design, super cute. Durable:Our pet ID tags Anti-rust and corrosion resistance for durable and long-lasting use Scratch and wear resistance without fading. Many uses:These pet tags are also ideal for the keyring DIY. Name, Telephone Number and address can be engraved here. The package includes: One piece for each color, total 10 pieces.（Double Sided blank）.