The CI4 Carbon Interfusion Reel is made of a carbon fiber that's over 1-1/2 times stronger than normal XT-7 graphite and is over 20% lighter. Because it doesn't contain metal, it's impervious to rust. The strength and weight of CI4 results in an extremely lightweight reel with very precise tolerance. Also features Paladin Gear Durability Enhancement, Propulsion Line Management System, Aero Wrap II Oscillation, and shielded A-RB ball bearings. Aluminum spool and handle with round EVA handle grip. Waterproof Drag. Fluidrive II gearing. Dyna-Balance front end. Super Stopper II instant anti-reverse.