The key difference between a micro ring and nano ring is the size. In terms of the fitting method, both are virtually identical in the technique used to fit the extensions, however a nano ring is significantly smaller than a micro ring. Due to this size difference, nano rings can only be used with nano tipped hair extensions, and micro rings can only be used on stick tip hair extensions. It is not possible to use these type of rings interchangeably as they simply will not fit. To find out more information on micro ring hair extensions, please click the link.