These cute labrets feature a dolphin shaped stud, which is made out of 14-carat gold. This stud fits into a bio-plast labret bar. Bio-plast is a bio-compatible plastic, which is great for people with metal allergies. Also, bio-plast is slightly flexible which makes it very comfortable to wear. Although people typically wear labrets in lip piercings, they also look great in other piercings. These labrets are 16 gauge/ 1.2 mm. This means that they can also fit in ear cartilage piercings. For example: tragus, flat and helix. Another advantage of bio-plast is that you can cut it to any size. So, they will always fit perfectly.