Choose an artline glassboard marker when you want vivid thick lines for eye catching window displays these markers feature a fine 20mm bullet tip for a consistent line width when writing or drawing made from strong acrylic fibre for long lasting use these markers contain a thick and dense ink for bright and vibrant writing on glass surfaces the ink is also low odour for increased comfort when writing and can be simply erased with a wet or dry wipe this pack contains 6 assorted markers in