The refill works with the MONO Zero pen

This 2mm fineliner pen is filled with black waterproof

They’re perfect for use with ABT Dual Brush Pens or any other water-based paints and are suitable for watercoloring

flexible tip allows precise strokes while still providing enough coverage for larger shapes and textures

The pens have a water-based ink that won't bleed through your paper (applies to paper weights of at least 80 grammes)

molotow blackliner pens set 2 4 set Talens Ecoline Liquid Water Colour Ink And Brush-pens The refill works with the4 set of the Molotow's Blackliners. The set includes the following sizes: 0. 3, 0. 5, 0. 7 and 1. 0. The markers are made in Germany and are filled with high quality black pigment ink that is water proof and has high lightfastness. We also sell Molotow Blackliner individually.