... offered 1. Rim Size: from 12" 14" 16" 20" 2. kids Bike Frame: steel and painting, thicker argon-arc welding/CO2 welding3 ... . kids Bike Fork: steel and painting, co2 welding steel /suspension fork4. Rim ... . Pedal: plastic, with reflector, without ball, PP/TPE/ALLOY14. Saddle: good leather, common or spring /plastic/imitation leather/ plate PVC ...