The color and the amount of the pigment determines the vividness and permanence of the line. Keson chalk sticks to your line until you decide you want it to stick to something else. Over the years, we've fine tuned our formulas to produce chalk that performs with consistent excellence, batch after batch.

Applications include interior layout, roofing, siding, and paneling. For interior or exterior use. ProChalk Standard for your basic chalk line needs that are easier to clean up or let wear away naturally.

Keson Model No. 105R

• Up to 8 lines possible with proper techniques
• 4-5 strikes usual line yield
• Brilliant color
• Great flow for easy box fill-up