Posca pc-8k poster markers have water-based pigments which can be blended when wet or overlaid when dry. Each marker has a chisel tip to produce thin lines on the point and thick, 8.0 Mm lines on the side. Plus, they can be used on a variety of surfaces making it a versatile writing utensil. - These markers have a broad chisel tip measuring 8.0 Mm and can both cover large areas and draw neat curves. - You can blend these markers when they are wet or overlay them when they are dry. - The water-based ink is fade-proof and opaque. - Each marker has a round, easy to grip barrel. - These markers are ideal for making bold markings or sign writing for both professional and personal use. - The colours included in this pack are black, white, gold, and silver. - There are 4 markers in this pack. - You can use them to mark on paper, metal, glass, fabric, minerals, canvas, ceramic, wood, and plastic. - Posca tips can be removed and washed by rinsing them under cold water or leaving to soak overnight. - The ball inside the barrel mixes the paint, giving an even consistency, while the cap provides a tight seal ensuring protection and longevity of the tip.