This is one of my favourite Smashbox Eyeliner brushes, sadly smashbox discontinued it, I purchased a spare when I purchased this one, now I think it is always good to have a spare of your favourites.
Smashbox discontinued most of their makeup brushes, I am not sure WHY? Out of all those beautiful brushes they had 10 brushes left, this is ridiculous.
Most of their brushes are as good as MAC, especially some eye / face brushes are much better comparing to MAC.