The Water Based series from MTN includes pens

It uses an oil-based ink that dries almost instantly

that can most easily be described as liquid watercolour

locking itself onto the surface

zig kuretake bimoji fude brush pen xt1 extra fine 0 3 1 0 mm GBR The Water Based series fromThe XT1 uses an extra fine felt tip built for small, detailed brush work rather than expressive lettering task checkboxes, dense daily logs inside 5 mm dot grids, or fine character detail where a wider tip would blur the lines together. Pressure shifts the stroke between a 0. 3 mm technical line and a 1. 0 mm bolder accent, giving a working range while staying small enough for tight spaces. The ink is a water based black pigment that sets waterproof