Tombow Fudenosuke Brush Pen- Dual Tip Black & Gray (GCD-121)
1pc Japan TOMBOW ABT108 Colors Double Tips Art Brush Pen Marker Profession Twin Tip Water Markers Painting School Supplies|Colored Markers| - AliExpress
Tombow Fudenosuke Twin Tip Brush Pen - Black & Grey - ArtSavingsClub
TOMBOW Fudenosuke Brush Pen, Twin Tip — Brush and Canvas