Polyester Cover / Composite AmSteel Fiber Core Constructed premium, highly abrasion resistant polyester cover and composite core of MFP (multi-filament polypropylene) and super high strength, lightweight AmSteel fiber. Compare a double braid polyester to XLS Extra: A 1/2" diameter polyester double braid can weigh 8.6 pounds per 100 feet or more. XLS Extra 1/2" diameter weighs only 7.7 pounds per 100 feet! This is a total savings of more than 10% in total rope weight. XLS Extra has extremely low stretch: as much as 65% less than other double braided lines. Splicing technique-- Core Splice. Size Diameter: 5/16" Approx. Strength: 3,500 lbs. Approx. Weight /100’: 3.2 lbs. Price Per Ft / Per 500’: $1.14 / $444.60 FEATURES: • Excellent wire halyard replacement for the cruiser/racer. • Lighter than double braid polyesters. • May be used for all sheeting applications. • Extremely low stretch. • For the cruiser or cruiser/racer.