Stanley 47-681 100 Chalk Line Reel & Chalk Set Stanley - Black & Decker Chalk line has two times the tensile strength of traditional lines and lasts twice as long Locking button holds string in place Water resistant case with rubber grips for comfort 3:1 gear drive for faster rewind Holds up to a 4 oz bottle of Stanley Chalk Chalk line has two times the tensile strength of traditional lines and lasts twice as long Locking button holds string in place Water resistant case with rubber grips for comfort 3:1 gear drive for faster rewind