Rim size:12  14  16  18  20

Frame: steel, argon-arc welding/co2 welding, 1.0mm

Front fork: steel, argon-arc welding/co2 welding, 1.0mm

Handlebar and stem: CP/ED, argon-arc welding/co2 welding Φ22X0.8-1.2mm

Brake: F/R Caliper Brake or R band brake

B.Bparts:A/ B axle

Rim: 12 14 16 18  20 steel alloy or aluminum

Chain cover: o type, 0.3mm,steel

Mudguard: plasitc

Chianwheel and Crank: 12"24T×89/1628T×102/20"28T×127 CP/ED

Flywheel:16T/18T brown/black/CP/ED

Tyre: 12"x1.75, 16"x1.75, 20x1.75 or 1.95 2.125 air tires or EVA tire

Head parts: CP/ED

Saddle: good leather, common or spring /plastic/imitation leather/ plate  PVC TOP

Pedal: plastic, with reflector, without ball, PP/TPE/ALLOY

Hubs: steel, CP/ED

Grips: PVC/TPR/RUBBER FOAM 

  If you have any questions or needs, please feel free to contact me! I'll contact you as soon as possible!