5X: With no stretch and superior strength the 5X is an awesome nymphing material. It is especially great for Czech nymphing with its super sensitive bite detection.
4X: A general purpose size ideal for hoppers and other terrestrials, especially when fishing tight to the bank.
3X: Stiff enough to turn over bigger flies and superb for streamers.
5X (0.006", 0,152mm); 10lb (4.6kg)
4X (0.007", 0,178mm); 15lb (6.8kg)
3X (0.008", 0,203mm); 20lb (9.1kg)