Markal Lumber Crayon, Clay Based, Series: 500, Hex Tip, 1/2 in Tip, -20 to 150 deg F, Blue, 4-5/8 in L Dimensions

ITEM FEATURES:

• Known in construction trades as "keel" or layout chalk
• Clay-based formula provides longer marking mileage
• Special harder formula allows for superior marking in hot climates
• Bold, bright marks are weather and UV resistant
• Marks on concrete, wood, metal, plastic, rubber, paper, cardboard and ceramics
• Lead free
• Standard 1/2 in hex shape fits the NO 109 Peterson holder, NO 106 holder and NO 108 holder