10 Bearing System - Corrosion resistant stainless steel ball bearings. Graphite Body and Rotor - Lightweight graphite reel construction. Braid Ready Spool - Allows braid to be tied directly to spool. Stainless Steel/Oil Felt Drag - Consistent drag pressure, and corrosion resistant. Aluminum Handle - Aircraft grade aluminum, extreme durability. Soft Touch Knob - Soft touch rubber knob provides excellent grip and comfort. Aluminum Bail - Thick aluminum bail wire design, rigid to prevent mis-shaping. 20 size reel is a 7 BB System.