Sufix Super 21 is a super low-stretch monofilament line that is supple and easy to handle. The high-viscosity nylon combined with the Advanced Tempering production process results in a super low stretch – approximately 40% less than other monofilament lines. Long molecular chains combined with the toughness and resilience achieved in the Advanced Tempering Process give Super 21® excellent tensile, shock and knot strength. This highly sensitive line allows for exceptional lure control and helps to detect even the wariest bites, this means quick hook sets for a better hook-up rate.