Lumber Crayon Actuation Type Not Applicable Casing Material Wood Holder Dry Time Immediate Glow-in-the-Dark No Grade Scanner Compatibility Not Applicable Hardness Not Applicable Marking Tip Shape Hex Maximum Application Temperature 100 Degrees F Minimum Application Temperature 0 Degrees F Pigment Color Red Pigment Material Clay Pigment Maximum Surface Temperature Not Applicable Pigment Minimum Surface Temperature Not Applicable Product Type Lumber Crayon