I have an extra fiberglass crossboom for sale.
I'll double-check all of the specs today, but IIRC it's 1-1/4" OD and about 6 feet long.
Shipping will be via UPS, and should run $10 or so in the Continental US.
If interested, contact me off list with an offer to k0kn at amsat dot org... Paypal preferred.
Thanks for the bandwidth..
Kyle Yoksh KØKN Olathe, Kansas