... length we can make as your requirement.5.Crank treatment:CP,ED OR UCP.6.Pedel:plastic without ball,with ... from 12" to 20",the rim treatment is UCP,CP,ED.10.Brake:caliper brake,V brake,band brake,coaster ... 5mm,3.0mm or 3.5mm.the treatment is ED,CP,UCP.11.Freewheel:12"-16T,16"-16T,20"-18T,single speed ... ED.16.Handle bar and handle stem:the treatment is CP,argon-arc welding or CO2 welding.the thickness is ...