The Uni POSCA PC-5M is a versatile water-based pigment ink marker that writes smoothly on almost any surface without bleeding through paper. Its polyester bullet-shaped nib creates a consistent 2.5mm line, perfect for detailed work and bold strokes. Available in 39 vibrant colors, including a distinct orangey Bright Yellow. POSCA markers adhere permanently to absorbent materials like paper and card. For other surfaces, permanence can be achieved through specific methods: Terracotta requires baking at 220°C and varnishing, textiles need ironing on the reverse, porcelain and glass need baking at 160°C (with optional varnishing), metal, wood, and plastic can be made permanent with clear varnish. Note: Markers may be shipped unwrapped during a transition period. The PC-5M marker features a medium bullet tip favored by professionals and hobbyists, making it suitable for a wide range of users from architects to young artists.