If you are looking for a clean look, a completely smooth ring is a perfect choice for most piercings. The model can be used all over the body, including as a nose ring, navel ring, in the septum, eyebrows and all different piercings in the ear (helix, tragus, earlobe, daith and conch).
There are two different variants, the classic Segment ring with a loose segment and the newer Hinged ring where a small hinge is located in one part of the segment, which makes it easier to open and close.
A Ring opening plier is recommended for Segment rings without hinges.