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.
・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