All measurements are approximate:
- 6g through 7/16" have a wearable length of 7mm and an overall length of about 13mm.
- 12mm through 5/8" have a wearable length of 8mm and an overal length of 15mm.
- The front is domed and the back is flat.
The Noir Plugs are not coated, the element that creates the AB effect is sealed within the glass.