IRWIN 64901 marking chalk 1 pc(s)

IRWIN 64901 marking chalk is a single-piece marking tool designed for clear, temporary lines on a variety of surfaces. Supplied as one chalk stick, it is suitable for both indoor and outdoor applications where visible, non-permanent marking is required. The chalk produces high-visibility marks that can be removed or will fade over time, making it useful for layout, cutting guides, and other short-term reference marks.

Advantages

This IRWIN marking chalk offers reliable visibility on wood, drywall, concrete and other common building materials while remaining easy to remove or brush away after use. Its formulation is intended to deliver consistent, even lines without excessive dust, and the single-piece supply is convenient for on-site tasks. The chalk is suitable for use in varied conditions, providing contrast where pencil or light markers may be hard to see.

Suitable for

• Temporary layout lines on construction and carpentry projects
• Marking cutting and drilling locations
• Interior and exterior surface marking for short-term reference
• General workshop and trade site marking where high visibility is needed

Key specifications

• Quantity per pack: 1 piece
• Intended use: interior and exterior marking
• Mark type: temporary, high-visibility

How to use

Select a clean, dry area of the surface to be marked. Apply the chalk directly to the material with moderate pressure to produce a clear line; pressure and angle can be adjusted to vary line thickness and intensity. For porous surfaces, multiple passes may be needed for optimal visibility. Remove marks by brushing, wiping with a damp cloth, or allowing them to fade naturally, depending on the surface and environmental conditions.

Usage recommendations

Store the chalk in a dry place and avoid prolonged exposure to moisture to preserve marking performance. Test on a small area if you are unsure about removability on delicate or finished surfaces. Replace the single-piece chalk when it becomes too small to use safely or when visibility diminishes.