First of all, this is NOT a brush designed to be used for your main eyeshadow application. Though not currently available on Birchbox, MAKE does sell a larger rounded eyeshadow powder brush (Expert Shadow Brush #6) for that purpose. Neither is this designed to be used primarily as an eyeliner brush (see instead MAKE's Expert Shadow Liner Brush #14), though its pointed tip could probably do you in a pinch. What it is is a relatively small eye detailing brush, which allows you to blend a number of shades with excellent accuracy. I find it particularly useful for highlighting colors under the brow and around the interior of the eye.
The quality of the brush itself has been (so far) very high, though I prefer my powder brushes to be all natural rather than a synthetic/natural blend. (This one includes pony hair, like most of my brushes. Notably, the Expert Shadow Brush is all goat hair.) When the time comes to replace some of my other brushes, MAKE will certainly get another look.