4g (5.2 mm)
This o-ring is available in the following size(s): 18g/16g through 1-1/8".
Kaos Softwear makes only bio-compatible body piercing jewelry. Silicone is both lovely and functional for body jewelry. Eyelets are so practical. You can get this in 10g through 3". Is this one of your favorite colors: black, blue, brown, clear, green, grey, pink, purple, red, white or yellow? Conch, ear lobe, helix or snug/anti-helix are a few of the piercings to use this in.
This o-ring is available in the following size(s): 18g through 1".