Western CGA-320 Regulator Nipple with inserted filter measuring 1/4" NPT Male X 2" is made of brass/stainless steel.
Caution
Safety First Western strongly encourages users of compressed gases to adhere to all safety guidelines and practices. Only an absolute and constant respect for compressed gases is acceptable for safe operations. Refer to the Western safety products such as check valves, flash arrestors, and relief valves.