Lightweight, compact Primary Response Oxygen Model 15200 portable oxygen administrator boasts flow adjustable from to 25 liters per min. Comes with refillable C aluminum cylinder with a toggle handle. Features high concentration non-rebreather mask with 7-ft. tubing. Comes in heavy-duty, nylon carrying case. Model 15100 offers fixed flow preset at 6 l. per min. Choose standard mask or oxygen-enriched CPR mask with hygienic one-way valve. Store in trunk or under seat of a vehicle.