CRG9 Deluxe Precision Detail Brush by Crown Brush. 

The Deluxe Precision Detail's bullet shape and dense bristles easily fit into the crease of the eyelid. This brush can be used in the outer corner of the lid to create extra depth and intensity to smokey eye looks, as well as in the lash line to finish off the look. 

Bristle Profile: Because of its small size, it can also be used in the inner corner of the eye and under the eyebrow to lift and highlight.