This add on is for when tufts need to be In a block colour which is different fur to the one on the front of the ears!
For example, ears with white inner (incl any airbrushing), + a solid brown tuft. This is like the ones photographed.
I usually airbrush onto lighter tufts (incl free in ear price) however they can't be fully saturated and can feel crusty/patchy if over saturated. This add on stops those issues as the fur is handsewn into the ear fur piece!