EVER+ONE Oxygen regulator with key 0-25 liter w/Brass Sleeve

3 - EVER+ONE Mini O2 Regulators Brand New in Boxes - Never Used.CGA 870 OXYGEN REGULATOR - A compact and light weight oxygen regulator is designed to fit any oxygen tank with a CGA 870 style fitting. Made of lightweight anodized aluminum with brass high pressure conduits. Designed to be used on oxygen tanks up to 2000 PSI.ADJUSTABLE FLOW RATE - Easily adjusts between 12 preset flow settings from 0-25 LPM with a simple turn of the knob. Easy to read indicator shows the current LPM.COMPACT SIZE - The regulator measures approximately 5.5 x 2.5 x 1.25, so it won't make oxygen tanks overly cumbersome by taking up too much space.SINGLE BARB OUTLET - The barb design fits securely into tubing and prevents leaks and detachment.OXYGEN KEY INCLUDED - Includes durable oxygen key (or wrench) that allows you to open portable oxygen cylinders. Comes with a chain that can be attached to the regulator for easy access. Perfect for everyday use. High quality materials and excellent craftsmanship ensure long-lasting durability.