You cannot breathe directly out of a scuba tank because of the high pressure. A regulator reduces pressure to safe a level that can be inhaled by the diver. A diving regulator has two parts: the First Stage reduces the tank pressure and connects it to the Second Stage which contains the mouthpiece for breathing

Hollis 212- DC2 DIN Scuba Regulator W/ Max Flex Hose


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Breathe with confidence knowing you have the peak of 30 years of regulator design experience in the 212 Regulator. While pushing the limits on strenuous dives, be confident that the performance and reliability of the 212 DC2 will never hold you back. brbr 212 Second Stage brulliPneumatically balanced second stage/liliPatented Dynamic Adjustment once set automatically maintains inhalation effort throughout the dive by compensating for depth changes./li/ul br DC2 1st Stage brulli High performance over-balanced first stage provides progressively greater intermediate pressure as depth and gas density increases for superior gas delivery under the most extreme conditions/liliCompact & streamlined forged design provides the ultimate control over the internal air path for superior air delivery/liliEnvironmental sealing prevents internal corrosion, contaminants, and icing of the first stage/liliDesigned to withstand the rigorous CE standard for coldwater performance/li/ul

FeaturesPatented Orthodontic Mouthpiece for comfort and reduced jaw fatigue
Easy grip controls for precise adjustment even while wearing gloves
Venturi Switch for simple Dive/Pre-Dive modes
Nitrox compatible to 40%
2 high pressure ports

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