Light weight C-40X carbon frame and sideplates 8BB + 1RB stainless steel bearings Quick-Set anti-reverse roller bearing Precision machine cut brass pinion gear Rigid, forged aluminum, anodized handle Light weight, EVA handle knobs for comfort Precision Elliptical Gearing system Machined aluminum, 2-tone anodized spool Heavy duty, solid aluminum bail wire CFR: Cyclonic Flow Rotor