• 02: Aluminum
• Precision-lathed 3.25'' aluminum roller drums run silent and smooth, and won't distort in heat or sunlight
• Designed for both indoor and outdoor use
• 03: Aluminum with resistance
• The same great features as our aluminum rollers, with the benefit of additional resistance.
• The unique patent-pending resistance unit uses zero moving parts to deliver 5 levels of quiet magnetic resistance.
• Patents issued and pending
• Fold flat or stand on end for convenient storage