30-LB FLYWHEELThe swift 30-pound flywheel will make it easy to get your exercise cycling routine started, while also maintaining speed and consistency as you pedal. The cast-iron make prevents any issues with pulleys or loud sounds. SILENT AND SWIFT RIDEBuilt with a modern near-silent belt-drive mechanism to give a smooth and consistent performance, removing any distractions as you work out no matter the time of day even when people are sleeping.