12 Pack Irwin 66402 Strait-Line 4-1/2" Blue Marking Lumber Crayon
- For use on oily, slick, wet, cold, or dry surfaces
- Non-toxic, waterproof
- Ideal for marking lumber, concrete, ceramics, rubber, metal, paper, and cardboard
- Wax-based crayons are non-toxic and waterproof
- Marks are weather-resistant