RIO Powerflex Tippet 30 Yards - A high tenacity copolymer with excellent knot strength and abrasion-resistance. Sometimes called double strength nylon. Used for all species, provides superb camouflage in any sub-aquatic environment. Powerflex has the perfect combination of elongation and tenacity, and we will match it against any competing brand any time. Excellent knot strengthAbrasion-resistanceUsed for all species30 Yards