L is the left foot pedal R is the right foot pedal. Number of Bearings: 1 Bearings + 1 DU. Material: Aluminum Alloy. Sealed Bearings Wind And Rainproof. Mounted on the foot to cycle more energy-saving.
RockBros Bike Pedals 4 Bearings 9/16" MTB Bicycle Flat Platform Aluminum Alloy
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