This POSCA PC-7M Marker contains water-based pigments which can be blended when wet or overlaid when dry. It's a great option for adding colour to artwork, signage, posters and more and has a medium bullet tip for adding lines that can be read from a distance. This marker has a 4.5 mm bullet shaped nib which allows you to create bold markings and precise colouring. You can use them to mark on paper, metal, glass, fabric, minerals, canvas, ceramic, wood and plastic. The water-based ink is highly pigmented for vibrant results. It has a round, easy to grip barrel. You can blend these markers when they are wet or overlay them when they are dry. This marker contains grey ink. POSCA tips can be removed and washed by rinsing it under cold water or leaving it 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. The PC-7M is appreciated by both beginners and professionals for its broad bullet tip, enabling both precise colouring and large-scale precision work.