This Surgical Stainless ID Bracelet Plaque fits on any of our interchangeable sport straps or faux leather straps. When engraved with a name or logo it makes a great sporty ID bracelet or corporate identification piece. Plaque can be purchased separately. Made of 316L Surgical Stainless Steel. Most medical bracelets on the internet are usually 304 Stainless. Although both are hypoallergenic 316L is non-corrosive. It is also known as "marine grade" stainless steel due to its increased resistance to chloride corrosion compared to type 304.