... .0mm,argon-arc welding/CO2 welding. 2.Axle: B/A Axle, British System, BLK/UCP 3.Brake: F Caliper Brake ED thickness ... .Tire / Tube :Air tyre of MTB type, E/V or A/V,12"x2.125 16"x2.125 20"x2.125 ... .Pedal: Without ball, Plastic with reflector, British System , BLACK/COLOR 10.Saddle:good leather,common or spring / plastic/imitation leather 11.grips ...