... Fork: steel, rigid fork,Head Parts: steel, CPHandlebar & Stem: Steel, Holland type, alloy adjustable stem, PROMAXHandle Grips: Super soft, ergonomical, double colorBrake Set: Front/Rear ... -cartridgeGear Set: SHIMANO TURNEY TZ-50 6-speedF/R hubs: Front steel CP hub motor, rear alloy hub motorSpokes: steel, CP ...