1/2 Inch Round Aluminum ID Tag. The cat's name will fit on the front; and, one phone # will fit on the back.

for example:
(Front)Fluffy
(Back)(588) 211-5553

The Mini Heart ID Tag will traditionally fit your cat's name on the front and your phone # and street address on the back.

for example:
(Front)Fluffy Miller
(Back)(588) 211-5553
1531 S Harrison St