CHRONARCH MG A-RB (Anti-Rust Bearings) are specially treated stainless steel ball bearings are at least 10 times more corrosion resistant than standard stainless steel ball bearings. Magnesium Frame our magnesium frames are safe for use in saltwater and provide an extremely lightweight reel. Lo-Mass Drilled Spool System reducing the weight of the spool by drilling, lowers start-up inertia for more manageable casts. Super Free (SF) bearing supported pinion gear system eliminates friction between the pinion gear and spool shaft for increased freespool. Drilled Handle Shank reduces the weight of the reel. Variable Brake System (VBS) uses centrifugal force rather than magnets to aid in controlling the cast for increased distance and adjustability. Septon this handle grip material is soft to the touch and does not get slippery when wet. Clicking Drag Adjustment reduces the chance of the drag backing off at light settings while providing the angler a reference point to how much drag they add or reduce by turning the star. Recessed Reel Foot allows the reel to sit closer to the rod for comfort and maneuverability. Metal Series metal frames keep moving parts in precise alignment for increased efficiency and durability. Turn-Key Access Sideplate flip up the easy to use turn-key and rotate it to remove the sideplate to adjust the VBS brake weights. A7075 Aluminum Spool is extremely strong, requiring less material for lighter weight, which helps to achieve more manageable freespool.