Patented Elliptical Oscillation SystemMulti-disk, Japanese-oiled felt drag washersDFD: Dual Force Drag system4BB + 1RB stainless steel bearings1 Quick-set anti-reverse roller bearingPrecision machine cut brass pinion gearCRC: Corrosion Resistant Coating processHDGII: Corrosion resistant, High density gearingCrossover aluminum and graphite hybrid body designHybrid spool design with graphite arbor and aluminum lipADC: Aluminum Drag Chamber precision spool systemRigid, forged aluminum handle designHydro Block water tight drag sealHeavy Duty, solid aluminum, anodized bail wireRESII: Computer balanced rotor equalizing system Model Bearings Ratio Line Capacity Weight RCB -30 4+1bb 5.0:1 200 0,20mm 320gRCB -40 4+1bb 5.0:1 170m 0,30mm 329gRCB -55 4+1bb 4.5:1 260m 0,35mm 440gRCB -65 4+1bb 4.8:1 330m 0,35mm 643gRCB -80 4+1bb 4.8:1 270m 0,45mm 659g