The Hydros SL series challenges everything you know about fly reels. A super-large arbor makes for extremely fast line retrieval rates. A sealed carbon drag (the clutch bearing is fully sealed inside the drag mechanism) means this reel is ready for whatever conditions you choose to throw at it. The Hydros SL family of reels have very strong drag systems with zero start-up inertia and an asymmetric drag knob for easy, no-look drag adjustments. A narrow spool means less line stacking with increased backing capacity. When you add all of these design concepts together, these reels put you in full control of fighting any fish.