Blue Chalk - Standard Marking Chalk Features

• Interior or exterior use
• Marks are temporary
• Provides great visibility

Red Chalk - Permanent Marking Chalk Features

• Exterior use
• Visible after weeks of weather exposure and jobsite wear

Orange Chalk - Hi-Visibility Features

• Use to show layout changes and corrections on metal, concrete, lumber, plastic, cardboard and other surfaces.
• Durable formula is weather-resistant and suitable for exterior use.
• High-visibility chalk is Ideal for low light conditions and on dark surfaces.