The El Marko Premier yellow lumber crayon is built to withstand wear and tear. The no-melt crayon's marks withstand temperatures up to 300 deg F. It marks lumber, metal, concrete, and most other surfaces, and the mark stays resistant to weather, fade, and sun.

• Crayon: 1/2" hex x 4-1/2" long
• Durable mark lasts and works on almost any surface
• Marks lumber, metal, concrete, and most other surfaces
• No-melt crayon withstands 300 deg F
• Weather, fade, and sun resistant
• Compatible with Crayon Armor crayon holders, which extend crayon life
• Limited lifetime warranty