I do all the work to all my toys myself, now after weeks of trying to buy A frame uprights for my Hang glider, I decide to make my own. and boy have I have had a great deal on the Aluminium tubeing from great firm in uk,,, Check them out if you need tubeing. I will add,, the tubeing is not anodiesed but this is not a problem for uprights on my four old gliders that I fly only on the sand dunes.