Tajima Cr202B-P Chalk-Rite Ii Ultra Thin Chalk Box(Sold By 2 Pack) Contractor-grade chalk snap-line with 100 ft. (30M) of ultra thin premium-grade braided line Smooth gear-drive winding, up to 3 times faster than standard snap-lines. Compact, fits comfortably in palm of hand yet holds up to 1.6 oz. (45 g) of chalk Durable, heavy-gauge die-cast aluminum case sealed with an elastomer gasket Includes 1.4 oz. blue chalk