Our pet id tags come with a split ring to attach to a collar, bag or even children. Our hand engraving gives a one off touch but we can machine engrave them if preferred (BONE SHAPE TAG SHOWS EXAMPLE OF MACHINE ENGRAVING) . . We can personalise each disc to your requirements using upper and lower case where desired and can fit full addresses, names, or special medical or feeding details on them. We do not charge per letter, word or even side so as long as it fits on we will engrave your disc with whatever you want for no extra cost. Please keep in mind the more you want on the discs the smaller the writing will be. We can also add finishing touches such as hearts, paw prints, bones, fish bones, stars, suns, smiley faces etc or just simple but attractive underlining. PLEASE NOTE THAT ALL THE TAGS CAN BE ENGRAVED BOTH SIDES EXCEPT THE CAT FACE TAG WHICH CAN ONLY BE ENGRAVED WITH TEXT ON THE REVERSE. If you order one of our discs, please message us with the details of what you wish to be engraved  and state if you have a preference of lower case or upper case and what you would like on each side.  YOU CAN MESSAGE US AT THE PAYPAL CHECKOUT, VIA CONTACT SELLER/ASK A QUESTION ON THE LISTING DETAILS PAGE.