Stainless Steel Pet ID Tag - Diamond Engraved - Bone, Round, or Heart Shape Stainless Steel Pet ID Tags by Providence Engraving. Premium quality 304 grade stainless steel polished and deeply engraved using a diamond bit for superior durability and a jewelry quality look. Up to three lines of custom diamond drag engraving per side and a stainless steel split ring are included with your purchase. Our stainless steel pet ID tags are available in three shapes (Bone, Round, Heart) as well as 2 sizes (Small, Regular). The SMALL is approximately 1" and the REGULAR is approximately 1.5". Please select your desired size and shape below then click "CUSTOMIZE NOW" to add up to 3 lines of text per side