Oxygen Enrichment Adapter - 2 pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>This Oxygen Enrichment Adapter connects oxygen tubing from any tank or concentrator to your CPAP/BiPAP equipment.</li><li>The pressure line of this CPAP tube adapter is commonly placed between the CPAP machine， humidifier， or mask and the hose to allow the addition of oxygen into your CPAP system.</li><li>This adapter works with all brands of oxygen tubing.</li><li>Measures 22 mm ID at one end and 22 mm OD connection at the other end</li><li>Fits with any standard CPAP/BiPAP tubing</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41oHp%2B54AiL.jpg" noproxy>