Carrier For M6- Cylinder * Oxygen Cylinder Holder Increased Mobility And Freedom For Individuals Who Are Required To Use Oxygen And A Wheeled Walker * Secures To The Walker With 2 Hook And Loop Fasteners And A Safety Buckle Strap At The Top And A Centering Strap Near The Bottom Of The Walker * Convenient Pocket For The Wrench * Manufactured And Sold Under U.s. Patent #6 672 321 *