... 1.0mm,argon-arc welding/CO2 welding. 2.Axle: B/A Axle, British System, BLK/UCP 3.Brake: F Caliper Brake ... ED thickness is 2.5mm/V brake; R Caliper/Band Brake/Coaster Brake/ V brake 4.Bike frame:steel and ... . 5.Tire / Tube :Air tyre of MTB type, E/V or A/V,12"x2.125 16"x2.125 20"x2.125 / EVA ...