Create intricate details with these uni posca pc marker pens featuring an extra fine 0.7 mm bullet tip. Perfect for detailed artwork on virtually any surface with vibrant, poster paint like colour that won't bleed.use these water based pigment ink pens on metal, wood, fabric, plastic, canvas and more. The ink wipes off tumblers easily for temporary window art, or can be made permanent on various surfaces through simple heat setting techniques.extra fine 0.7 mm bullet point for precise detail work.works on virtually any surface including metal, wood, fabric and tumblers.water based pigment ink with vibrant colours.bleed proof on paper and card.odour free formula for comfortable use.can be made permanent with heat setting or varnish.