Zinc plated steel fittings to suit stainless braded hose

.Kit contents -

1 x 7/16 UNF to -4 hose concave seat swivel fitting. (the sort of thing you might use to screw onto a remote reservoir pot as second picture)

The general rule of thumb is that male fittings have the convex seat and the female has the concave seat.

Please check - not everyone works to this.