Stronger than steel, STS-12 is a 12-strand Dyneema SK-75 line developed with top riggers and racing teams, with higher tensile strength and an improved strength to weight ratio compared with Endura 12. Enhanced coating penetration and water resistance, improved yarn handling and tighter, firmer strands result in line with a more uniform appearance, easier splicing and longer service life.Best Use: Halyards, sheets, low-stretch control lines, guys, slings/hoisting ropes Construction: 12-strand single braid Core Fiber/Construction: Coated Dyneema SK-75 Stretch: 0.70% at 20% of breaking strength