Faithfull Hi-Vis Nylon Brick Line is ideal for general bricklaying and marking out. The braided nylon line has less stretch than other types of line making it strong and flexible. It resists fraying and is also useful for a plumb line as it does not spin around like conventional twisted cord. Rot proof, waterproof, and resistant to mildew, dryness and heat. Fits the FAIBLDISPHD Brick Line Dispenser.