Stiff Butta Heavier, stiffer butt a Ultra supple tippet a Superior knot strength a Incredible toughness a Built-in shock resistance FrogHair Leader Packs - Supple & Stiff Tapered Leaders + 30M Spool of Tippet 30M SPOOL OF TIPPET & 2 TAPERED LEADERS (9.5FT) PER PKG Code Size Tippet Test Strength Tippet Diameter Butt Diameter FFHLP-22 5X-Stiff 4.9 lb (2.23 kg) 0.006" (0.152 mm) 0.023" (0.580 mm) FFHLP-21 4X-Stiff 6.2 lb (2.82 kg) 0.007" (0.178 mm) 0.023" (0.580 mm) FFHLP-20 3X-Stiff 8.5 lb (3.86 kg) 0.008" (0.203 mm) 0.025" (0.635 mm) FFHLP-19 2X-Stiff 11.1 lb (5.05 kg) 0.009" (0.223 mm) 0.025" (0.635 mm) FFHLP-18 1X-Stiff 13.1 lb (5.95 kg) 0.010" (0.254 mm) 0.025" (0.635 mm) FFHLP-17 0X-Stiff 15.0 lb (6.82 kg) 0.011" (0.279 mm) 0.027" (0.686 mm)