Uni POSCA PC-1M water-based pigment ink marker.Line width: 0.7mm.Writes on virtually any surface with no bleed through on paper.Acrylic extra fine nib for more precise projects.Uni POSCA markers use water-based pigment ink to produce poster-like vibrant colours.Writes on metal, glass, plastic, stone, etc.- virtually any surface.Non-bleed ink doesn't feather and doesnt bleed through paper, unlike alcohol-based markers.Writes on sketches, photographs and fabrics.Easily removed from glass - ideal for temporary signs on windows, windscreens, etc.Let dry after application and new ink can completely cover the previous colour.