... 12" to 20"2. Frame:Steel and painting,thicker argon-arc welding/CO2 welding3. Fork:Steel and painting, co2 welding steel ... " inch steel alloy or aluminum5. Handlebar an stem:CP,argon-arc welding Φ22X0.8-1.2mm6. Tyre:Air tyre or EVA ... , Southeast Asia, Africa, Oceania, Mid East, Eastern Asia,Western Europe.. HP-10036 Kids Favorite China Children Bicycle