Hot Surface Markers, Actuation Type Not Applicable, Casing Material Paper Wrapper, Dry Time 33 sec, Glow-in-the-Dark No, Grade Scanner Compatibility Not Applicable, Hardness Firm, Indoor/Outdoor Usage Indoor/Outdoor, Marker Size Group Standard, Marking Tip Shape Hex, Maximum Application Temperature 1,700 Degrees F, Minimum Application Temperature 350 Degrees F, Overall Length 4 3/4 in, Pigment Color White, Pigment Material Paint, Pigment Maximum Surface Temperature 1,700 Degrees F