Crain - Aluminum Tension Tube - 3'

Aluminum tension tubes are lightweight and rust resistant. Aluminum stretcher tube no. 516 of 3' can add up to 4' 8" of length to your stretcher, in 4" increments. Crain's aluminum tubes feature a marker line on the inner tube and outer tube to align the knobs with the holes during length adjustment. These tubes work with other standard size diameter tubes. Closed length: 2' 10.5". Useful length adjustment range: 3' to 4' 8".

• Lightweight and rust-proof
• Adds up to 4' 8" of length to a stretcher, in 4" increments
• Marking line on inner and outer tubes to align buttons with holes during length adjustment
• Works with other standard size tubes