Description Features This brass reducing coupling will allow you to go from 1/2" to 3/8" within your gas line. Each end is female pipe threaded, thus any 1/2" or 3/8" fitting which is male threaded will work just fine. If you're looking for many more gas fittings which you just can't seem to find, then let us know and we'll see if we can help. Just hit up the Contact Us page and give us a call (or, just send a quick e-mail). Brass fitting 1/2" Female pipe thread to 3/8" female pipe thread flare to female pipe thread Ideal for reducing your gas line from 1/2" to 3/8"