Crawford-Lehigh N14100 7/16-Inch-by-100-Foot Solid Braid Nylon Rope
This 7/16" x 100' Solid braid nylon rope has a lock-stitch construction to keep its shape and integrity under stress and sudden shock loading.  Excellent for use with pulleys. Rope is also very flexible for easy knotting. Nylon is the strongest of all ropes, and when stretched, has a "memory" for returning to its originals length. For this reason it is best for absorbing shock loads as is the case when lifting or towing. Nylon lasts four to five times longer than natural fibers because it has good abrasion resistance and is not damaged by oil or most chemicals. Like manila, nylon has good resistance to ultraviolet deterioration from sunlight (referred to as "UV stability").