The Maddak Oxygen Tank Holder for D and E tanks provides a safe, convenient and economical way to carry oxygen cylinders. Size D and E tanks fit into this holder with minimum lifting and positioning. Attaches to the handles and frame of the wheelchair and positions the tank off-center to avoid contact with the user's head or back.Made of heavy duty, waterproof nylon. Change Bullet Points to: •Designed for a 26” long tank •Lightweight •Easy to lift •Easy to install Change product "overview" to: The holder for D and E tanks is designed to position a 26"L tank. The holder holds the oxygen off center behind the wheelchair back so it does not interfere with the wheelchair user's head or back.