The Pica Classic 521 Permanent Marker is designed for permanent markings on almost all surfaces. Its chisel tip allows for a marking width of 2-6 mm, providing versatility for various applications. The marker features permanent alcohol-based ink that is waterproof and becomes indelible after approximately 10 seconds. It is free from toluene and xylene, ensuring a safer marking experience. The "Dry-Safe" technology allows the marker to remain uncapped for up to 14 days without drying out. Ideal for use on materials such as plastic, metal, glass, tiles, ceramics, processed wood, laminate, stone, concrete, dry tire rubber, and dry raw wood.