... > fashional design Children Bicycle, BMX Bike, Kid's Bike, BMX Bicycle, Kids Bicycle1. Rim Size: 12" 16" 20"2. Bike Frame: steel and painting ... , thicker0.7-1.5mm, TIG welding and CO2 welding3. Bike Fork: steel and ... painting, co2 welding steel /suspension fork4. Rim: 12" 16" 20” steel, alloy5. Handlebar ...