... frame: steel, co2 welding, size: 12141618202. children bike rim: 12 inch steel CP3. children bicycle mudguard: plastic or steel4. tyre ... : 12 inch air tyre5. chain: full chain6. handlebar: steel CP7. ... painting, co2 welding steel11.bicycle size: 80*50*66cm12. attachments: bag, helmet, flag, the covers of the wheels, training wheels13. ...