Lumber Crayon Actuation Type Not Applicable Casing Material No Casing Dry Time Immediate Glow-in-the-Dark Yes Grade Scanner Compatibility Lucidyne ColorScan Hardness Soft 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 3/4 in Pigment Color Watermelon Red Pigment Material Wax Pigment Maximum Surface Temperature Not Applicable