#18x500 feet braided mason line flour green Weight:1/2lb as per spool Commonly used in building construction #18 x 500 ft. Braided Nylon Mason Line Flour Green With Tube /Reel#18 500ft. Braided Nylon Mason Line . Professional masons and contractors ask for this quality, long wearing, tough, braided line. Special braiding process aids elasticity and eliminates sagging. Solid bright colors make it ...