5050 series 2 pedals have an aluminum/polycarbonate body, inner bushing/outer cartridge bearing and 10mm adjustable traction pins.The left pedal is indicated by a small grooved line around the threads of the spindleItem SpecificationsColorBlack/SilverWeight448gIntended UseDH/FreerideMaterialAluminum/PolycarbonatePedal Spindle9/16"Spindle MaterialChromolyPedal TypePlatformDefined ColorBlack