H Paintstik® Solid Marker, 3/8 in x 4.56 in L, RedHot surface marker writes on hot castings, forgings, coils, billets, plates, and other hot metal surfaces Fast drying marks are permanent and will not run, char, flow, discolor, peel, or crack Forgings and parts can be immediately dipped into cold water baths without damaging the marks Real paint for long lasting, highly visible marks Can be removed in pickling baths