... arc welding/co2 welding.4.Chainwheel&crank:12"-24T*89,16"-28T*102,the crank length we can make as ... the treatment is ED,CP,UCP.11.Freewheel:12"-16T,16"-16T,20"-18T,single speed.heat treatment.finish:black or ... treatment is ED.15.Kickstand: Φ8.5 ,treatment is ED.16.Handle bar and handle stem:the treatment is CP,argon ... container 12" 68*17*37 1x40HQ 1275pcs 9/7KG(G.W/N.W) 16" 86*17*44 1x40HQ 950pcs 11/9KG(G ...