Chalk Rite II Extra Bold features smooth winding 5-gear chalk snap lines with gasket sealed die-cast aluminum cases and braided 0.04 in ( 1.0 mm ) extra bold lines. Contractor-grade chalk snap-line with 100 ft (30 metres) of extra bold premium-grade braided line and smooth gear-drive winding, up to 3 times faster than standard snap-lines. Being compact it fits comfortably in the palm of your hand yet holds up to 1.6 oz (45g) of chalk. Also features folding cranks, easy-fill spouts, and tools to facilitate line replacement. SpecificationsMaterial: AluminiumItem Weight: 308g Features and BenefitsContractor-grade chalk snap-line with 100 ft (30 metres) of extra bold premium-grade braided lineSmooth gear-drive winding, up to 3 times faster than standard snap-linesCompact: fits comfortably in the palm of your hand yet holds up to 1.6 oz of chalkDurable, heavy-gauge die-cast aluminum case sealed with an elastomer gasketPositive gear-lock line hold, automatically release