Pens & Markers by Uni Posca. Details:Uncap your imagination with uni-ball's POSCA PC-8K, the ideal water-based paint marker for tracing curves and covering large areas. The broad 8mm chisel tip can draw clear curves with a graphic calligraphy effect, as well as provides full color coverage on wide areas. It is the perfect paint maker for markings of all kinds, from skateboards and windows to even decorating rooms, furniture and fabrics. Dilute, mix or blend the paint marker ink to create stunning effects for your indoor and outdoor projects. POSCA paint is permanent on porous surfaces and erasable on most smooth non-porous materials. Enthusiasts love that the chisel tip can be removed and washed. Available in 35 bright, opaque colors, these non-toxic paint markers are versatile enough to create controlled and refined lines while also providing smooth and complete coverage.