Convert your low pressure regulator hose into an inflator hose, by screwing the adapter into the end of the hose to turn any length regulator hose into a low pressure inflator hose.
One end of the adapter is a 9/16" male and screws into the regulator hose, the other end is a quick disconnect BCD female slide-lock Schrader valve fitting that accepts the standard BC inflator male post.
This adapter can be an ideal kit for a save-a-dive spares kit, as you will only need one hose and this adapter, instead of 2 hoses in the kit, keeping it small and compact.
