They are pretty cheap, You gave me an idea. I have one and think I will
extend the length of it from the bottom with some conduit and make a 40
meter vertical.

My current 40 meter vertical is two 10 foot sections of steel TV mast
with an 18 foot CB antenna to total 28 feet. On the project list is to
add another 5 feet of mast but I will still use a tuner to get to 80 &
160 any way!

It is pretty sturdy.

John Ferrell W8CCW
"Life is easier if you learn to
plow around the stumps"