Twisted Polypropylene Rope is a very popular choice among consumers due to its low cost and ability to resist the elements. Our Red twisted polypropylene rope is much stronger than manila rope but not as strong as other synthetics, like nylon. Red Polypropylene is mostly used for safety lines. Another advantage of polypropylene is that it will float in water, either fresh or salt water. Twisted Polypropylene is often a choice of utility contractors use this rope for pulling wires through conduit lines. This is a pliable rope and can be easily spliced together. A spool contains 600 ft.