Multi-disc,Japanese-oiled felt drag washers 9 stainless steel ball bearings Quick-set anti-reverse roller bearing Precision machine cut brass pinion gear HDGII:Corrosion resistant,high density gearing CRC:Corrosion Resistant Coating process ALC:Rigid,diecast aluminum frame EOS:Patented Elliptical Oscillation System Machined aluminum,two-tone anodized spool Rigid, forged aluminum handle design Hydro Block watertight drag seal Heavy duty, solid aluminum, gun smoke anodized bail eire RESII:Computer-balanced Rotor Equalizing System Narrow Blade Body design for reduced fatigue