NO. Parts Specificastion 1 Rim size 12’ 16’ 20’ 2 Rim 12" 16" 20" steel alloy or aluminum 3 Frame Steel and painting ,argon-arc welding 4 Frok Steel and painting ,argon-arc welding 5 Handlebar and stem CP argon_arc welding 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×89/16"28T×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/CKD/AB 85%SKD/50%SKD 1PCS/CTN or 4PCS/CTN