Super strong and incredibly versatile, this RIO(R) Powerflex(R) Tippet is truly amazing! Sometimes called ''double-strength nylon'', Powerflex is made from a high-tenacity copolymer that offers the perfect combination of elongation and suppleness. Ideal for a nearly every species, this abrasion-resistant tippet's light gray color provides excellent camouflage in any sub-aquatic environment. Dispensed from RIO's patented Tippetmaster(R) spool with patented restraint design for easy tippet withdrawal. 30 yards. Size Chart0X: 0.011'' Diameter, 15 lb. Strength1X: 0.010'' Diameter, 13 lb. Strength2X: 0.009'' Diameter, 10 lb. Strength3X: 0.008'' Diameter, 8.2 lb. Strength4X: 0.007'' Diameter, 6.4 lb. Strength5X: 0.006'' Diameter, 5 lb. Strength | RIO Products Powerflex Tippet Freshwater Fishing Line | Size 4X