2011 popular children bicycle 1. size: 12"-20" 2. color : any color you like 3. MOQ:100 pieces 4.call me 13730558759 2011 popular children bicycle in the market1. Rim Size: from 12" 16" 20"2. Bike Frame: steel and painting, thicker argon-arc welding/CO2 welding3. Bike Fork: steel and painting, co2 welding steel /suspension fork4. Rim: 12" 16" 20" steel alloy or aluminum5. Handlebar and stem: CP, ...