Mallet 2 has stamped steel wings and 8mm adjustable traction pins. Series 1 & 2 pedals have an inner bushing /outer cartridge bearingThe left pedal is indicated by a small grooved line around the threads of the spindle Item SpecificationsColorSilver/BlackWeight403gIntended UseDH/FreerideMaterialAluminum/PolycarbonatePedal Spindle9/16"Spindle MaterialChromolyPedal TypeClipless with PlatformDefined ColorSilver