Perfect suitable for fine, detailed works and lines. Containing a acid-free pigment ink on alcohol base, made in Japan. Waterproof & photocopy safe. Certified with the AP-Mark quality seal, the high qualitative ink guarantees a true black color. The nib is made out of strong synthetic and will not break up or fringe. Compatible with all Montana Acrylic Markers and Colors. The Sketchliner is available in six different sizes: 0.1mm, 0.2mm, 0.3mm, 0.5mm, 0.8mm & 1.2mm. Also available in a set. 
The Montana Sketch liners are versatile for use on many surfaces. To open your mark making possibilities, try combining them with the Montana ACRYLIC markers (once dry) in the Montana Black books or Montana Marker paper pads. All sketch liners are available in single packs including the 1.2mm size which is not present in the sets.