Increasingly more people are using the Grettz 100m Yellow string line because of its high visibility and durability. Because of the 8-strand braiding, the line has a high strength and won't fray when cut. Unlike many other lines, the Grettz brand is packaged on a weatherproof, durable plastic reel that prevents water logging and tangling.

Most frequently used for laying brick or blocks, stud work, concreting, laying out foundations, and many other tasks.