The Drive Medical Universal Wheelchair Oxygen "E" Cylinder Holder is perfect for people who need to bring their Oxygen tanks with them on the go. The cylinder holder easily attaches to the wheelchair, while the protruding bar holds the cylinder in place while moving. The holder even comes with a universal spacing sleeve allowing the holder to accommodate other types of wheelchairs. The Universal Wheelchair Oxygen "E" Cylinder Holder is a necessity for anyone who needs to bring their oxygen with them wherever they go.