1.size of kids Bicycle 

12", 14", 16",18",20"

lor of kids bicycle 

red, blue, yellow, black, pink, purple and so on

3.frame of kids bicycle 

steel and painting, thicker argon-arc welding/CO2 welding

4.fork of kids bicycle 

steel and painting, CO2 welding steel/ suspension fork

5.rim of kids bicycle

aluminum or steel alloy

6.handlebar and stem of kids bicycle

CP, argon-arc welding, separate handle,steel

7.tyre of kids bicycle

12"x1.75, 14"×1.75,16"x1.95, 20"x1.75 or1.95/2.125

8.chain wheel & crank of kids bicycle

12" 24Tx89, 14" 24T×88, 16" 28Tx102, 18' 28T×102, 20" 28Tx127 CP/ED

9.crank of kids bicycle

CP or ED or UCP

10.chain cover of kids bicycle

full chain cover with sticker or 9-form chain cover

11.brake of kids  bicycle

F/R Caliper Brake or R band brake

12.freewheel of kids  bicycle

16T/18T/20T Brown/Black/CP

13.mudguard of kids bicycle

steel, plastic or CP

14.saddle of kids bicycle

leather with reflector

15.pedal of kids bicycle

plastic, without ball, PP/TPE/Alloy

16.grips of kids bicycle

PVC/TPR/RUBBER FOAM

17.B.B parts

3 pcs B.B axle B.B cup