High speed-rapid rewind and a freewheeling line out feature make this chalk box the preferred chalk line of the professionals. Three winds for every turn, to give a fast rewind. Simply push the sturdy handle to the side and the line is free wheeling without the handle spinning. Release the pressure and the line locks in place. This unit is in a corrosion free, chrome plated, scratch free A.B.S. case which is lightweight but exceedingly strong. Includes a quick fill, self-sealing rubber grommet for fast refilling.