... Fork: steel and painting 7. B.B.axle: CP ,UCP, ED 8. Saddle: good leather common or spring/ ... plastic/imitation leather 9. Crank : CP or UCP or ED 10. Hoop: Steel /aluminum 11. ... or aluminum 14. Flywheel: 16T/18T/20T Brown/black/cp 15. Colour: red ,yellow ,blue, green, etc ... you with different toy bicycle, tube and tyre, axle series,handle bar,bell,saddle,pedal,bar end,rim,freewheel,crank ...