Bike, Children bicycle, children bike, Kid's bicycle, Kid's bike 1. Size: from 12" to 20"2. Bike frame: steel and painting, thicker ardon-arc welding3. Bike fork: steel and painting, Co2 welding steel4. Bike rim: 12" to 20" steel alloy or aluminum5. Handlebar and stem: CP, argon-arc welding6: Tyre: 12"×1.75, 16"×1.75, 20"×1.75 etc.7. Chainwheel and crank: 12" : 24T×89, 16": 28T×102, 20":28T×127 CP/ED8: Crank: CO/ED/UCP9: Brake: F/R Caliper Brake or R band brake10: Flywheel: 16T, 18T ,20T, Brwon/ Black/ CP11: Mudguard: Steel, painting or CP12: Chain: full chain or 9 form chain cover13: Pedal: Plastic, with reflector, with ball or without ball, PP/TPE/ALLOY14: Saddle: good leather, common or spring/ plastic/imitation leather/plate PVC TOP15: Grips: PVC/RUBBER ROME16: B.B Parts: Steel17: Color: Red, Blue, Green, Yellow etc. whatever color you like18: Packing: Exporting Standard packing 85%SKD/50%SKD, 1PCS/CTNOthers: Popular design, excellent quality, competitive price, sticker is designed professionallyOur products have win a high reputation, enjoy good popularity at home and abroad, if you areinterested in our goods, please contact us when you are feel free, we will give you the professionaldetails and information