AERO COLOR® Professional LINERS are empty pens perfect to create outlines with different thicknesses.
The empty pens can easily be filled with all 36 AERO COLOR standard colour shades and 12 colours TOTAL COVER.
Please note that AQUA DROP LINER is for (Aqua Drop) Watercolour Inks only. Do not use with (Aero Color) Acrylic Inks.