Refined, lighter weight large arbor fly reel
Improved fully-sealed drag clutch bearing
Radiused reel foot for kink-free leader protection
Ergonomically improved, easy to use drag knob
Zero start-up inertia
Excellent retrieval rates and less line coiling
Hydros I for line weights 1-3; 4.7 oz, 3.1? in diameter.
Hydros II for line weights 3-5; 5.0 oz, 3.4? in diameter.
Hydros III for line weights 5-7; 5.5 oz, 3.7? in diameter.
Hydros IV for line weights 7-9; 6.6 oz, 4? in diameter.
Hydros V for line weights 9-11; 7.7 oz, 4.25? in diameter.