Each No. 502 extension tube section can add up to 4' 8" of length to your stretcher, in 4" increments. The tube holes are punched rather than drilled for accuracy and durability. The spring-loaded knobs are flat on their tops for smooth adjustment. The knobs are precisely located in the inner tube, so they hold the outer tube to the inner tube during transport. Works with other standard diameter poles. Closed length: 2' 10". Usable length adjustment range: 3' 4" to 4' 8".
- Adds up to 4' 8" of length
- The holes are punched rather than drilled for durability and accuracy
- The knobs are rounded for smooth tube adjustment
- Works with other standard diameter poles
