... varnish ,thicker argon-arc welding/CO2 welding,3.Bike from fork or rear fork:steel and painting,argon-arc welding/co2 welding ... ball,with reflector,british system,black or colour.7.Saddle:good leather,common or spring,or plastic,or imitation leather.8.Grips:Pvc,Rubber9 ... .Rim:alloy rim or steel rim,the thickness is 0.95mm,the size is from 12" to 20",the rim ...