1. Rim Size: from 12" 16" 20" 2. Bike Frame: steel and painting, thicker argon-arc welding/CO2 welding 3. Bike Fork: steel and painting, co2 welding steel /suspension fork 4. Rim: 12" 16" 20" steel alloy or aluminum 5. Handlebar and stem: CP, argon-arc welding Φ22X0.8-1.2mm 6. Tyre: 12"x1.75, 16"x1.75, 20x1.75 or 1.95 2.125 air tires or EVA tire 7. Chain wheel & crank: 12"24T×89/1628T×102/20"28T×127 CP/ED 8. Crank: CP or ED or UCP 9. Brake: F/R Caliper Brake or R band brake 10. Flywheel: 16T/18T/20T Brown/Black/CP 11. Mudguard: steel, painting or CP 12. Chain: full chain or 9-form chain cover 13. Pedal: plastic, with reflector, without ball, PP/TPE/ALLOY 14. Saddle: good leather, common or spring /plastic/imitation leather/ plate PVC TOP 15. Grips: PVC/TPR/RUBBER FOAM 16. B.Bparts:3pcs B.B axle B.B cup 17. Paint: 3X/4X painting 18. Color: red, black, blue, green, yellow etc. any color you like 19. Attachments: bag, helmet, flag, the covers of the wheels, training wheels 20. Packing: export standard packing SKD 85%SKD 1PCS/CTN or 2PCS/CTN 21. Green paint is good for health ; 22. we can manufacture the bag, the helmet and the cover of the wheels to match the bikes 23. Can make the new sticker according to customers’ demands