Contractor-grade chalk snap-line w/100 (30M) ultra-thin premium-grade braided ...Contractor-grade chalk snap-line w/100 (30M) 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...more