Uni-ball PC-5M Posca markers are poster coloured markers that use water-based ink. These pens are great for drawing posters, sketching and flipcharts. The pens are suitable for paper and can be applied on metals, plastic, vinyl and glass. The PC-5M's versatile bullet tip offers unlimited freedom of use. It adapts to all types of creation. With its 1.8–2.5mm tip, the PC-5M offers wide freedom of use. The PC-5M suits all sorts of people: artists and creative professionals such as architects and designers; fans of creative hobbies and home decoration; surfers and skaters wanting a new look for their boards. Its ease of use makes it ideal for beginners to explore their creativity. It is ideal for customising porous, irregular surfaces such as wood, stone, concrete etc.