... 3.) ISO9001 quality certificate 4.) OEM requires optional Female Brass FittingMade by high quality brass in advanced technology Other ... Adaptor ,brass coupling ,male and female coupling ,brass quick connect, brass hose coupling, brass connector ,swivel connectir,brass plug etc ... .Material: Brass HPb59-1Formation:Forging and CastingScrew thread:Female and MaleThread Standard:NPT,BSP othersSize:1/2"~6 ...