High pressure in combination with the Loop soft valve makes it perfect for broad and thin strokes

but before it dries you can mix it directly on the surface

5 mm up to a 4

where a regular pen would barely show up at all

sakura koi coloring brush pen Idwrap High pressure in combination withThe Sakura Koi Coloring Brush Pen uses a flexible polyacetal brush tip designed to behave like an actual paintbrush rather than a typical felt marker tip it bends under pressure and bounces back to a fine point as soon as you lift off, so you can move between thin detail lines and broad sweeping strokes without switching pens. Pressure controls the width, from a fine 0. 5 mm line up to a 4. 0 mm wash. The ink is a water based, solvent free dye built