Flare Male ConnectorMaterial SpecificationC360 (Free Cutting Brass), IS 319, others as per requirement StandardsASTM, JIC-SAE Types of Tube SizesMetric, Imperial Thread StandardsUNF, BSPT, NPT UsesGasoline, Oil, Grease, Water, Air, Vacuum Lines, L.P. & Natural Gas. ApplicationRefrigeration, Air Conditioning, Copper or Brass Tubing, Aluminum, Steel Tubing Size1/4” to 3/4”