Nano ring hair extensions are the newly developed type of hair extensions, the rise of this kind of hair extensions are due to its almost invisible feature. Nano ring hair extensions are very similar to the micro ring hair extensions, but the size of Nano ring hair extensions is indeed less than 90% of other ordinary hair extensions, and is usually about the same size as the tip of a ballpoint pen. The metal ring at the tip of the modified hair can be firmly fixed with the tip of the hair extension after being clamped by the pliers.