Supplied by OmniSwivel International, this adapter offers a fixed 98° angle to connect a standard low pressure regulator hose having a standard 9/16-inch fitting to the special M16x1 fitting found on the Interspiro brand Divator (a.k.a the 'AGA') Breathing Valve found on their line of full face masks. The swivel attaches between the regulator second stage and its low pressure hose, routing the hose down the diver's chest and/or under the arm, which increases comfort and streamlining. This low-profile adapter is not an omnidirectional swivel and so it maintains its angle and will not allow the regulator to flop around. Some people prefer the 98° adapter because it angles the hose very slightly away from the neck and face.

The OmniSwivel AGA swivels fit AGA masks made after 2005 directly without the need of any modifications. Older masks need to have the gray plastic 13 mm retention nut that holds the valve onto the mask replaced with the updated 19 mm version.