Pica Signal marker GEL blue

Marks on both smooth and rough materials, whether light or dark, rusty or oily, hot or ice cold, highly permanent, after a few minutes, high-contrast markings? even on dark surfaces, weatherproof & lightfast markings, ideal for outdoor use, variable line widths from 2 - 8 mm possible, in the quiver protector for one-hand operation, high-quality, smooth-running rotating mechanism, chloride-free for markings on stainless steel, markings temperature-resistant up to approx. 1000 ° C