Superseding Shimano's great Corsair and Catala reels, the Corvalus has incorporated all the great features and all the knowledge gained by years of reel making into one reasonably-priced, tough round reel. The Shimano Corvalus offers a cast aluminum frame and aluminum sideplates for longer smoother life and increased casting efficiency. Super Stopper and Assist Stopper ensure there is no back play in your spool for rocksolid hooksets. Corvalus also features Shimano's VBS Variable Brake System so you can dial in and virtually eliminate backlashes. The Shimano Corvalus Casting Reel are quality round reels at a reasonable price - designed to get the job done.