Lumber Crayon, Actuation Type Not Applicable, Casing Material Wood Holder, Glow-in-the-Dark No, Grade Scanner Compatibility Not Applicable, Hardness Soft, Marking Tip Shape Hex, Maximum Application Temperature 150 Degrees F, Minimum Application Temperature -20 Degrees F, Pigment Color Green, Pigment Material Clay, Pigment Maximum Surface Temperature Not Applicable, Pigment Minimum Surface Temperature Not Applicable, Pigment Permanence Removable, Product Type Lumber Crayon