Teardrop labrets made from recycled sterling silver, they are given a slightly rough finish and are then oxidized.
As you can see from the main photo they come in 4 different sizes: Large: 8x5mm, Medium: 7x5mm, Small: 5x3.5mm, XSmall: 4x2.5mm
The backing is a bioflex push fit, you simply push the top in to the backing and it sits secure.