The custom PTFE lined metal hoseļ¼ outer is ss304 stainless steel wire braided, middler is ss304 stainless steel corrugated hose, inner is PTFE tube. It is the material of stainless steel 304 steel wire Beaded PTFE flexible metal hose produced by customized ISO9001 certificated metal hose manufacturer.Costomized with buyer's specific design, such as I.D, O.D, Lenth, Connects, Material, Printed Tag, Package, etc.