Pre-Cut STS-HSR SALE, 8mm, Silver, 28 FeetWith STS HSR, sailors have the option to use a rope with a smaller diameter without losing (and in most cases gaining) tensile strength. STS HSR lets you use smaller rope diameters without compromising on strength with the added benefit of reducing the overall weight of the line. Comprised of Dynema fiber, Stronger Than Steel HSR is heat set which at a microscopic level reorients the molecular chains in a linear fashion, thus ensuring greater load