Great for everything from light freshwater to medium saltwater applications, Shimanos Nasci Spinning Reel features Hagane Gear to ensure the ultimate in durability no matter the conditions. X-Ship construction keeps gears in perfect alignment, providing enhanced power and smoothness for quick, easy retrieves. G-Free Body technology shifts the reels center of gravity closer to the rod, reducing fatigue caused by casting. CoreProtect makes the reel water-resistant and better for use on saltwater. The 500-size reel has a four-bearing system (3 BB + 1 RB) while all other sizes are a five-bearing system (4+1). Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Reels.