its an eyebrush but i find the 249 is great for the studio finish concealer. I use it for that all the time, it layers the concealer on evenly so you dotn have to blend as much.
I use Quo's concealer brush, but I've been using Studio Finish for years and I love it. It's the best one I've found so far, and it doesn't break me out/irritate my sensitive skin.