By Avon Dual Ended Eyeliner and Smudger Brush. A dual-ended eyeliner brush that creates a clean, smooth line on the eyes and has a smudger for blending liners and shadows.
Dual Ended Tapered Eye Shader/Smudger Brush
Eyeliner Is Easier Than You Think (And Better Than You Imagine)
'Smudger's Tools': vintage camera assemblage by Laurence Poole, 2011