Aluminum stretcher tubes are lightweight and rust-resistant. The 5' aluminum stretcher tube, #517, can add up to 8' 8" of length to your stretcher in 4" increments—enough for a variety of rooms. Crain's aluminum tubes feature a reference line on both the inner and outer tubes to align the knobs with the holes during length adjustment. These tubes work with other standard-diameter tubing. Closed length: 5'. Usable length adjustment range: 5' to 8' 8".
