Not like that...
Actually you use a 18M US but it has a 14F built in inside. It's called an 18M14F US reducer.
You can mate a 14M US on it as a stem. makes sense???
So, basically you'll use the 14M side of this GonG as your stem, you'll need to rig a basket screen to make it work as a regular stem....
And then get something like this but US jointed, not like the weird job that this Chinese glass blowers did to this
18M14F US reducer by adding an extra unnecessary length???? so weird, right???
Can you see the extra addition after the grounded glass. Smooth as silk...
Basically this is a 14F that reduces an 18F, makes sense??
In this photo you can clearly see the weird addition plus extra work that cheap hand work can do, why the hell/fuck they waste material/time/sweat on that extra extension, makes no sense at all in a reducer, with those weird side slits??? WTFCKKK???
Here you can see how it will connect, the basket should be in the 14M side, makes sense??
And here is mated to Milanesa, in this case because is extra long/large ISO jajaja it's sitting on the screen and no way making any seal. This photo is just to try to make some sense to my rambling and try outs...
Stay vaped my friends...