... ,bikeltem no:12" 16" 20"Frame:steel and painting,argon-arc weldingB.Bparts:3pcsRim:steel,plasticMudguard:steel,paintingTyre:12"x1.75,16"x1 ... Caliper BrakePedal:plastic,with reflector,without ball,Saddle:leather,commonFork:steel and painting, co2 welding steelCrank: CPColor:red,black,blue,etc ...