A compact version of Pen 68, these mini felt tip pens feature the same quality, vibrant inks that will not bleed or dissolve toner or permanent maker ink. The sturdy, bullet fiber tips are great for designing, layout detail, sketching and more. These long lasting pens can be left un-capped for up to 24 hours without drying out. High brilliance and luminosity. Steady, even ink application that can be perfectly used for bold lines and large areasDetails:Includes assorted colors1 mm fiber tips10 sets (18 pens per set, 180 total pens)Felt tipLong lastingOdorless inkWater-based and water soluble