Markal Lumber Crayon #500 is a harder, clay-based crayon for longer marking life and is suitable for marking in hot climates. The bold, bright marks are weather- and UV-resistant

• Known in construction trades as "keel" or layout chalk
• Clay-based formula provides longer marking mileage
• Special harder formula allows for superior marking in hot climates
• Available in fluorescent colors for high visibility marks
• Clay-based formula provides longer marking mileage than most lumber crayons
• Lead-free
• Weather-resistant, fade-resistant marks

LA-CO Markal® 80321 Lumber Crayon Marker, Length: 4-5/8 Inch, Tip Size: 1/2 Inch, Tip Style: Hex, Yellow, Dry Time: 2 min, Temperature: -20 To 150 deg F, Applicable Materials: Wood, Concrete And Stone, Metal, Plastic, Rubber