The Chad CGA 540 Oxygen Regulator offers a multitude of liter flow options from 0-15 liters per minute. The Barb Outlet will connect directly with a cannula. The ergonomic T-handle makes tightening quick and pain free. A sleek blue finish gives this oxygen regulator some flare. This oxygen regulator by Chad is made with brass components to ensure long lasting and reliable use. This item has been fully quality control tested and inspected in the USA.