ARC have produced one million kinds of brake hose fittings, including different sorts of standards and styles And ... raw material is usually steel 20, coated yellow Zinc. Commoditybrake hose fittingsMaterialMild steel, stainless steel, aluminium, copperThread standardsMetric: M10X1, M10X1 ... heading, cast,OtherMetal accessories, rubber accessories, plastic accessories Hydraulic brake hose end fittings