... packages, crafts, households #18 x 540 ft. Chalk Mason Line Flour Yellow With Reel #18 x 540 ... ,Mason Assorted Rope ,Builders Line Decoy Line ,Chalk Mason Line. Size #18 Working Load Limit ... lbs. • Strong, holds knots well• For chalk and mason line• Holds up well to repetitive use• ... nylon line • Use to mark brick, block, concrete and landscaping layouts • Use in masonry, construction, gardening, ...