The package includes: 16 pieces bone shaped design aluminum pet ID tags for cats and dogs(Double Sided blank)and 16 pieces Key Rings. Double-sided Sublimation: ID tags can be engraved on both sides, and up to 8 lines of text can be added; You can add up to 4 lines of text on each side, and you can choose front or back to add text. Lovely Bone Shape: These bone-shaped blank dog tags are cute and suitable for sublimation, and can be engraved with a name, address, phone number, etc. Made from durable Aluminum alloy, durable, not easy to rust and corrosion protection, scratch-proof and non-fading. Product Size: about 1.9 x 1.2 x 0.04 inches /4.8x3.0x0.1cm (length x width x height); Note: These products are blank tags, you need to engrave the required information on them yourself.