Size:12″ 14″ 16″ 18″ 20″
Bike Frame: steel and painting, argon-arc welding or CO2 welding Φ22X0.8-1.5mm
Bike Fork: steel and painting, co2 welding steel /suspension fork Φ22X0.8-1.5mm
Crank:one piece crank ,CP or ED or UCP;3pcs
Part to tighten the seat tube: very easy to assemble and tighten;
Brake: F/R Caliper Brake or R band brake or V brake or foot brake
Handlebar and stem: 4-points handlebar,CP, co2 welding /argon-arc welding Φ22X0.8-1.5mm
Tyre: 12″x1.75,16″x1.75, 20×1.75 or 1.95 2.125 2.4 air tires or EVA tire;
Saddle: good leather, common or spring /plastic/imitation leather/ plate PVC
Rim: 12″ 14″ 16″ 18″ 20″ steel alloy or aluminum or plastic;
Chain wheel & crank: 12″24T×89/1628T×102/20″28T×127 CP/ED
Flywheel: 16T/18T/20T Brown/Black/CP;
Mudguard: plastic,steel ,CP;
Chain: full chain or 9-form chain cover;
Pedal: plastic, with reflector, without ball,with ball, PP/TPE/ALLOY;
Paint: backing lacquer/spray powder -painting