There is a delicate balance that needs to be maintained with higher grade chalk: you need enough pigment to slap down a line that's not going anywhere and enough carrier to keep the chalk flowing. ProChalk Plus is formulated to achieve a perfect, lasting line every time.

Keson Model No. PM8BLUEMER

• Professional grade marking chalk
• Water-resistant lines hold your mark
• 8–10 strikes usual line yield
• Great flow for easy reel fill-up
• Brilliant weather-proof color