Dixon 49400 Industrial Lumber Crayon - Carbon Black - 12 per Package

• Sets the standard for lumber crayons.
• Extruded lumber crayons last up to 10 times longer than ordinary molded wax crayons.
• Fade-proof, water-proof and smear-proof.
• Works on wet (green) or dry lumber, metal or concrete

Extruded lumber crayons last up to 10 times longer than ordinary molded wax crayons. Fade-proof, water-proof, smear-proof. Won't melt in direct sunlight. Will work on wet (green) lumber or dry wood, metal, concrete and most other surfaces. Hex shaped 4-1/2" x 1/2" to fit lumber crayon holders.