The PRO-LINE HT is a unique liquid paint marker engineered with industry-leading PrismaLock© technology, which locks in colors for bright, bold marks that can withstand temperatures of up to 1,800°F (982°C). By using specialty pigments and resins, this fast-drying paint offers unparalleled durability and mark readability, with some colors retaining easily legible marks up to 2,200°F (1,204°C). 97301 97302 97303 97305