10 Bearing System - Corrosion resistant stainless steel ball bearings. Magnesium Body and Rotor - Feather light design. Braid Ready Spool - Allows braid to be tied directly to spool. Sealed Carbon Drag - Sealed system, always lubricated, always smooth. Carbon Handle - 21% lighter than aluminum. EVA Knob - High density EVA, lightweight comfort. Slow Oscillation Gearing - Improves line lay and minimizes line twist.