flexible brake pipe hose copper coated steel pipe used in automobile brake ISO9001:2008, DOT brake pipe1)outer diameter:8mm,6.35mm,6mm,4.76mm,4mm;2)wall thickness:0.70mm,0.65mm,0.60mm,0.50mm;3)we can supply the product as customer's design;4)packing as customer's request;5)competitive price among the same area; steel brake pipe