Paint Crayons, Paint Crayon, Marking Tool Color Family Blacks, Marking Tool Surface Material Metal, Min. Temp. 120 Degrees F, Max. Temp. 1,600 Degrees F, Dry Time 12 to 24 hr, Marking Tool Tip Size Group Large, Series M(R) and M-10 Paintstik(R), Marking Tool Tip Shape Round, Tip Size 11/16 in, Black, Features Annealing and Heat Treating, Marking Temperature Up to 1600 Degrees F, Standards OSHA, Package Quantity 12 WARNING: Cancer - www.P65Warnings.ca.gov - Titanium dioxide (airborne, unbound particles of respirable size)