Australia Band 5 Seconds of Summer 5SOS - Custom Dog Tag Necklace Dog Tag is made from Aluminum, image only one side, the back is smooth aluminum The image printed using crystal clear enamel coating for long lasting effect Includes a 30" adjustable bead chain, can be cut to your preferred link with scissors For use as a necklace, keychain, dog tag, bag tag, and more Tag diameter is 1.69"