I have a heavy duty aluminum pneumatic mast for sale. It is app. 7' tall collapsed, 5.25" dia. at the base, & extends to 26'10", by way of compressed air. The base is drilled & tapped for fittings. The unit weighs approximately 60lbs. Asking $500.00 OBO. I may be reached at 615-871-7964 days. 73, Robin KB4IDC Your e-mail returned due to insufficient voltage.