Extra heavy-duty chalk box with new Extreme Bold Snap Line™ which holds double amount of chalk comparing to Extra Bold Snap Line™ is suitable for fieldsworks which require continuous snaps. New canister fill cap enables felt replacements.

Features

• Premium braided snap line creates Extreme Bold 0.07 in (1.8 mm) lines
• Holds 2x more chalk than the Extra Bold Snap Line marking tools
• Heavy-duty aluminum case integrated with non-slip grip surface
• Large refill port also allows for convenient felt replacement
• Double-speed winding mechanism