Shark Manufacturing builds and sells the Shark Pony Bottle Bracket – the best and easiest pony tank mounting system you can buy. The typical application and uses for diving with a pony bottle are: Spare air system, Dry suit inflation, Argon, Nitrox, Deep diving, Dive leader, wreck diving, cave diving OR if it’s required by your training organization, OSHA or employer to have a stand alone breathing air source. The Shark Pony Bottle Bracket mounts securely to the tank and doesn’t hang from the strap on your buoyancy compensator. It’s not a two piece design and doesn’t require male or female mounting brackets.