Markal Pro-EX is a clay-based, extruded lumber crayon for bright marks on different surfaces in the construction trades. This premium-grade crayon works on wet or dry surfaces.
Features
- Stronger formula for reduced breakage and longer marking life
- Superior performance on wet, frozen, or treated wood
- Clay-based formula for smooth, fast marking
- Marking range: -20°F to 150°F (-29°C to 66°C)
Industry Uses
- Construction
- Stone and masonry
- Lumber and timber industry
Surface Uses
- Wood
- Concrete and stone
- Metal
- Plastic
- Rubber









