The MTN Montana Colors WB Square Marker has a 15mm square tip for wide lines and filling areas. Filled with a water based acrylic paint, these markers are highly pigmented too. The paint is matt finish and available in twenty colours selected from the full water based chart. The markers, spray paint and refills all totally match by colour, not just by name. This gives many projects really good colour matching, across a range of mediums. Suitable for nearly all types of surfaces. these markers are quick drying too.