6mm Chisel Nib
Zig Illumigraph Liquid Chalkpens are perfect for internal use, essential for messages that need to be changed regularly. The Illumigraph range is commonly known as 'wet-wipe' and are easily removed from non-porous surfaces with a wet cloth, no chemicals are required.
They are great for use on glass and under ultra violet light, and are sometimes referred to as glow pens.