The cartridges are precision-milled to fit all four Pilot Parallel Calligraphy Pens — 1

451 Sky Blue

for ruffer surfaces we recommend Grog’s Stronghair tips

0mm medium tip writes with precision and control

tombow abt dual brush pen 18set secondary colors Alfe The cartridges are precision-milled toThis set fills in the gap between a primary palette and a full collection oranges, purples, teals, and ochre tones that would otherwise need to be mixed from primaries, useful for landscape work, fashion illustration, or typography where those in between hues come up often. It's meant to extend an existing palette rather than stand alone as a starter set. Each pen has two tips on one ink reservoir: a flexible nylon brush tip up to about 10 mm for