... steel/suspension forkRim:12” 16” 20” steel alloy or aluminiumhandle bar and stem: CP,argon-arc weldingtyre:12”* ... /18T/20T brown/black/cpmudguard:steel,painting or CP chain:full chain cover or semi chain coverpedal: plastic,with reflector,withour ball,PP ... /TPE/alloysaddle: good leather,common or spring/plastic/ ...