Rio's newest tippet material, the Powerflex Plus Tippet, is the strongest nylon tippet material ever made, with tensile strengths up to 20% more than regular tippet. A highly technical formulation of the nylon copolymer manufacturing process has resulted in this prodigious strength increase, without compromising knot strength or suppleness. Simply put, this is the strongest, most reliable tippet ever made. Each spool has the added bonus of 50 yards of tippet. Comes on a 50-yard spool Strongest and most reliable tippet material Designed for freshwater fly fishing.