Utilize this brass regulator inlet nipple for various gas regulators with a 1/4 NPT connection. The inlet nipple provides fast and semi permanent connection, however not as permanent installations. They are made up of a brass material for maximum durability. Utilize this brass regulator inlet nipple for various gas regulators with a 1/4 NPT connection The inlet nipple provides fast and semi permanent connection, however not as permanent installations They are made up of a brass material for maximum durability