Aluminum stretcher tubes are lightweight and rustproof. The No. 517 Aluminum Stretcher Tube of 5' can add up to 8' 8" of length to your stretcher in 4" increments - enough for a variety of rooms. Crain aluminum tubes feature a score line on the inner tube and the outer tube for aligning the buttons with the holes during length adjustment. These tubes work with other standard size diameter tubes. Closed length: 5'. Range of useful length adjustment: 5' to 8' 8".

• Lightweight and rustproof
• Adds up to 8' 8" of length to a stretcher in 4" increments
• Score line on inner and outer tubes to align buttons with holes during length adjustment
• Works with other standard sized tubes