Standard micro-rings are commonly used when fitting and applying stick-tip (i-tip) hair extensions. But now the latest innovation in hair extension application is called the Nano Ring Technique.
Nano rings are very small when compared to the traditional micro rings (90% smaller in comparison) They have a 3mm outer diameter and 2.5mm inner, which makes them extremely discreet and almost undetectable and are used with Nano Tip Hair Extensions.