Give your boat a sharp, well-kept look! This is the strongest and easiest-to-handle line you can buy that stays flexible throughout its service life. The core and cover is constructed from the highest quality treated nylon. The combination of high-grade marine nylon, special torque-balanced construction, and a unique stabilization process produces a long-wearing, easy-to-handle line that resists kinking. Our double braid line offers controlled elongation and excellent abrasion resistance. Double braid lines stretch slightly less but are stronger than three-strand lines. Ready made with professional 12" eye splice and bitter end heat sealed and whipped.High elongation; stretches6.5% at 20% of breaking strength20,500lb.breaking strength in 15', 25' and 35' lengths Torque-free non-hockling; stays flexible and very easy to handle Very little degradation from UV; can be used outside over long term if inspected regularly Manufactured with premium high tenacity nylon fibers and conforms to MIL-R-24050E What Diameter and How Much LineDiameter: The size, length and type of line will depend on a number of factors including the length, weight and type of boat. The following information is intended as a guide only. Docking in exposed waters, strong winds or tides may require larger or additional lines.Length: Transient dock lines are typically about 2/3 of the boat's length when used on the bow and stern. Spring lines should be equal to your boat's length.Diameter Selection Table Boat LengthDock LineAnchor LineMooring Pendantup to 203/8”3/8”1/2”20-301/2”1/2”5/8”30-351/2”1/2”3/4”35-401/2”5/8”7/8”40-455/8”3/4”1”45-555/8”7/8”1”55-653/4”1”1 1/4”