The STANLEY® FATMAX® XTREME™ Black Chalk (2.27kg / 5 lb) is formulated for the toughest marking jobs where long-lasting, bold lines are critical. Its high-performance formula provides superior adhesion to rough and uneven surfaces, making it ideal for outdoor use, concrete work, and heavy-duty construction environments. The bulk 5 lb container ensures professionals have a reliable supply for extended projects.

Key Features:

• Bold Black Lines – Provides strong visibility on lighter surfaces.

• Heavy-Duty Formula – Superior adhesion for rough, uneven, and porous surfaces.

• Fade & Weather Resistant – Stands up to outdoor conditions and heavy traffic.

• Professional Grade Performance – Designed for construction, masonry, and industrial use.

• Bulk Size (5 lb / 2.27kg) – Long-lasting supply for large projects and job sites.

• Smooth & Consistent Flow – Prevents clumping for clean, precise marking.