Corrosion resistant graphite frame and sideplates CZ-55W features aluminum frame and graphite sideplates Machined aluminum, anodized spool Multi-disc Carbonite drag system Forged aluminum, anodized star Anodized aluminum swept handle reduces wobble while cranking 4BB+1RB stainless steel bearings MCS: External magnetic cast control system on 5CS, 10CS and 12CS sizes Ergo grip handle knob Dual anti-reverse system (mechanical & roller bearing) XL Gearing: Drop down gear box Quick-Set anti-reverse roller bearing MSS: Mechanical Stabilizing System for increased durability Self-lubricating gear system, all models