Also known as layout chalk or "keel"
Clay-based formula provides longer marking mileage than most lumber crayons
Shape fits the #109 Peterson holder, #106 holder and #108 holder
Weather-resistant, fade-resistant marks
Lead-free
Color(s): Fluorescent Orange; Crayon Size: 1/2" x 4 5/8; Temp
Range: -20°F to 150°F; Applicable Material: Cardboard; Ceramics; Concrete; Glass; Metal; Paper; Plastic; Rubber; Wood.

Sets the standard for lumber crayons
These extruded lumber crayons last up to 10 times longer than ordinary molded wax crayons
They're fade-proof, water-proof and smear-proof
Won’t melt in direct sunlight and works on wet (green) or dry lumber, metal or concrete
Each crayon is individually UPC coded
Hexagonal shape fits lumber crayon holders
Color(s): Blue; Crayon Size: 4 1/2" x 1/2; Size Group: Large; Temp
Range: 0°F to 140°F.