Sharpie Professional 7 Permanent Markers feature durable permanent inks that resist fading when put to commercial use. The ink is suited for 7 applications, including extreme heat (up to 500 degrees Fahrenheit). These permanent markers can be used on most materials including metal, glass, plastic, film, and foil. Marker Ink Type: Permanent; Marker Tip Type: Bullet; Marker Tip Size (text): Fine; Marker Color(s): Black.
