Description Secure your oxygen cylinder with the Drive Medical Oxygen Rack. This cylinder rack is the best choice to secure multiple oxygen tanks in your home. It is made of a Lightweight, Alloy Carbon Steel with a Chrome-plated finish perfect to secure the oxygen tanks. This cylinder rack is designed to hold 6 E, D or C oxygen cylinders. Proposition 65 Warning: This product contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.