... cap, pipe nuts, End cap nut 2.Raw Material :Brass 58-3, C37700, lead -free ,or according to requests 3.size:customized ... on your request4certification:IS 9001;20005.Surface:yellow brass nut,or Nickel Plated ,or chorme plated 6:Application:water pipes,air conditioner ,refrigerator ... . Please feel free to contact us for more information. Brass nut