Lumber Crayon, Actuation Type Not Applicable, Casing Material No Casing, Dry Time Immediate, Glow-in-the-Dark Yes, Grade Scanner Compatibility Lucidyne ColorScan, Hardness Medium, Indoor/Outdoor Usage Indoor/Outdoor, Marker Size Group Standard, Marking Tip Shape Round, Maximum Application Temperature 70 Degrees F, Minimum Application Temperature 40 Degrees F, Overall Length 4 5/8 in, Pigment Color Watermelon Red, Pigment Material Wax, Pigment Maximum Surface Temperature Not Applicable