Copic Classic, Alcohol-based Markers, 12pc Set, Basic (Discontinued model: EAN 4511338002209) This model has been discontinued by the manufacturer. The current model comes in an improved plastic case that stores the markers more securely (Product ID: B08V8972QH).Premium alcohol-based markers made in Japan.Two Nibs (Replaceable): Standard Fine and Standard Broad.Ink is refillable with a separate ink refill product “Copic Ink”.Square barrel. Compatible with the Copic Airbrush System. These Copic markers are versatile double-ended refillable markers with fast-drying, permanent non-toxic ink, ideal for calligraphy, airbrushing and graphic arts applications. These markers feature a broad tip on one end offering smooth, consistent coverage for large areas, while the fine tip on the other end allows for easy detail work.