uni Chalk liquid chalk marker pens are made in Japan and have a 1.8mm - 2.5mm bullet nib.
They are perfect for writing on non porous chalkboards, chalkboard labels, windows, metal, plastic, glass and any other non-porous surface.
They are rain resistant so are suitable for indoors and outdoors use but can also be easily removed from non-porous surfaces using a damp cloth, for more stubborn marks you can use one of our chalkboard cleaners.