Uni-Posca Marker is multi-surfaced, opaque, water-based ink marker great for posters signs, sketching, lettering, graphs, and charts. Use them on paper, matboard, wood, Styrofoam, metal, plastic, vinyl, glass, and more. The ink is odourless, non-toxic, fadeproof and bleed proof ideal for artists and creative professionals such as architects, creative crafts hobbyists for scrapbooking, for interior design amateurs, surfers and skaters. PC-8K – 8 MM – Grey - Medium tip – Most versatile in Posca range. Providing clear, precise line and beautiful colour. Ideal for beginners to explore creativity.