2.Bike Frame: steel and painting, argon-arc welding or CO2 welding Φ22X0.8-1.5mm     

3.Bike Fork: steel and painting, co2 welding steel /suspension fork Φ22X0.8-1.5mm

4.Crank:one piece crank ,CP or ED or UCP;

5.Part to tighten the seat tube: very easy to assemble and tighten;        

6.Brake: F/R Caliper Brake or R band brake or V brake or foot brake;

7.Handlebar and stem: 4-points handlebar,CP, argon-arc welding Φ22X0.8-1.5mm;

8.Tyre: 12"x1.75,16"x1.75, 20x1.75 or 1.95 2.125 2.4 air tires or EVA tire;

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

10.Rim: 12" 14" 16" 18" 20" steel alloy or aluminum or plastic;

11.Chain wheel & crank: 12"24T×89/16"28T×102/20"28T×127 CP/ED

12.Flywheel: 16T/18T/20T Brown/Black/CP;

13.Mudguard: plastic,steel ,CP;

14.Chain: full chain or 9-form chain cover;

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

16.Paint: painting;

17.Color: red, black, blue, green, yellow etc. any color you like;

18.Attachments:flag, the covers of the wheels, training wheels,tool box, basket;

19.Packing: export standard packing, SKD/CKD/AB, 85%SKD/50%SKD, 1PCS/CTN or 4PCS/CTN