This 6 Cylinder Oxygen Carrier from Drive Medical is a great choice when you need to store a few oxygen cylinders. Supporting cylinders of size M9, this carrier is versatile and space-saving. An optimally placed handle allows easy mobility of the cylinder carrier. This Oxygen Cylinder Carrier is designed so that it can be used in homes. Small, compact, and lightweight|Doubles as a cylinder rack|Chrome plated finish, alloy carbon steel|Two easy push buttons for tool-free assembly|New knock-down design saves on freight