HT Paintstik Solid Paint Marker, 3/8 in dia, 4-1/2 in L, WhiteRed-hot surface marking crayon writes on billets, coils, bars, slabs, ingots, and other hot metal surfacesDurable marks will not run, char, flow, discolor, peel, or crackFast-drying marks are not damaged during handling or when immersed in cold water bathsReal