1 pocket,portable,light 2 derailleur:shimano,6 speed 3 novel ... : CP, argon-arc welding Φ22X0.8-1.2mm6. Tyre: 16"x1.75, 20x1.75 or 1.95 2.125 air tires or ... /ED8. Crank: CP or ED or UCP9. Brake: F/R Caliper Brake or R band brake10. Freewheel: 16T/18T/20T Brown/Black/CP11 ...