The TO2TE D Size Oxygen Cylinder Holder for Walkers securely holds a D size oxygen tank to the front of a rolling walker. This lightweight carry bag allows people using a D size oxygen cylinder to walk using a front wheeled rolling walker while carrying the oxygen tank. The TO2TE D Size Oxygen Cylinder Holder safely and securely holds a D size oxygen tank with hook and loop straps that adjust without tools. This walker tote bag helps walker users move about freely with their d size oxygen tank. The oxygen tote bag is made of durable nylon, and on the back is a convenient valve wrench pocket for storing the valve wrench. The TO2TE D Size Oxygen Cylinder Holder for Walkers allows TO2TE D Size Oxygen Cylinder Holder Specifications: Holds: One "D" size oxygen tank cylinder, 20 inches high, 4.38 inch diameter. Construction: Rugged nylon. Attachment: Sturdy Velcro straps. Fits: Most 2 wheeled walkers. Note: Walker, cylinder and valve wrench are not included.