The Shimano(R) Thunnus CI4 Spinning Reels are built with Shimano's(R) signature S-Concept design for a smooth, silent and strong performance. The Propulsion Line Management System increases casting distance, and the Paladin Gear Durability Enhancement gives your reel long-lasting, out-of-the-box smoothness and durability. Additional components include a lightweight CI4 frame and rotor, aluminum sideplate, machined aluminum handle and more. FEATURES: Lightweight CI4 frame and rotor Aluminum Sideplate Paladin Gear Durability Enhancement for durable and long lasting out-of-the box smoothness Propulsion Line Management System: Propulsion Spool Lip, SR One-Piece Bail Wire, Power Roller III for longer casting distances with redesigned Bail Trip and S-Arm Cam Varispeed Oscillation S-Concept design produces smooth, silent and strong reels S-Rotor, S-Arm Cam, Direct Drive Mechanism (Thread-In Handle Attachment), Oversized Septon Grips for Power and Comfort, WP Drag (Waterproof Drag) Machined Aluminum Handle Dartainium II Drag Washers (Cross Carbon) Repairable Clicker 6 S A-RB (Shielded A-RB) ball bearings Super Stopper II anti-reverse uses a one-way bearing to eliminate backplay Dyna-Balance eliminates wobble by counter balancing the rotor to enhance sensitivity and smoothness Floating Shaft Fluidrive II gearing polishes the surface to maximize tooth contact and increase efficiency without added effort Approved for use in Saltwater