Standard 1/4 npt to 3/8 barb for connecting a hose to a male threaded connection of a different diameter | Brass material make it strongest construction for prolonged service life,Easy to use and reliable | Hose barb on one end and male NPT threads on the other, no leaking and durable, easy to connect and disconnect | Barbed fitting for a tight seal on hoses and NPT threads for a tighter seal than straight threads | Package include 2 Pack 3/8" Hose ID x 1/4" NPT Male Pipe brass fittings