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

Then you can buy empty Stylefile markers and fill them with your own shades

which holds up well for fine geometric drawing or technical layout work

Is A4 a good size for portfolio and assignment work

Four ballpoint pens in one

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