I usually never like this type of liner since i find them hard to use. But i actually really liked this one!
I prefer using it to make a very very thin line with no wing, since it makes very precise lines.
I have also made it work as a thicker winged liner (pictures), but i found because of the small tip it took a long time to fill in. And also
if you are wearing shadow, it will transfer onto the liner a little and make it apply less pigmented. But this can be fixed with a quick wipe on the back of your hand.
I have given it 4 stars because it´s the only liner i have ever tried that could make really really thin lines. And i also really love shade of brown that it is :)