High-quality Oxygen Cylinder with pre-filled medical grade oxygen, a built-in aluminium trolley, regulator, humidifier and oxygen mask. All-in-one mobile oxygen cylinder kit for home or clinic use. Built-in Aluminum Trolley with cylinder basket and straps helps easy transportation. Durable and high-quality steel construction. Safety features such as pressure-reducing valve and safety valve. High quality flow regulator for stable output pressure. Pre-filled with medical grade oxygen – ready to use.